Some use baking soda instead of salt which will have a similar effect and be very foamy. To prepare an iron coin clean solution you need Hydrogen Peroxide (H2O2) and Ammonium Persulfate (NH4)2S04. As discussed above, the right way to use vinegar for cleaning coins is to soak them in it. Do not do this. To make a coin bath, you have to gather two important things. Just soak the gold coins in the soap water for a few minutes and then rub gently till the rust removes. All rights reserved. When copper is exposed to the elements, it oxidizes and starts developing a blue hue. The more valuable a coin is, the less reason you have to clean it. Lastly rinse coins with normal temperature water and get them dried. Previous answers said not to clean them. Cover the container and set it somewhere out of the way. Nearly all types of cleaning will substantially decrease the monetary value of your coins, especially if the face or back is damaged in the process. Cleaning old coins with olive oil is a popular method. Double Pocket 22 Unplasticized Vinyl Flips Safe for Long Term Coin Storage. However, if you have dirty old coins that are not worth much, you can take a stab at cleaning them at home. Silver tarnishes when exposed to moisture or air. Some coins may contain hard dirt that is almost impossible to remove with only water and soap. After 24 hours wash the coins with distilled water and dry them. There are many methods to clean coins, even as experts argue over whether coins should be cleaned at all. By using our site, you acknowledge that you have read and How to clean old corroded coins? This article has been viewed 158,096 times. All you have to do is place your coins in a bowl and pour in enough of the solution to cover them. Step 4: Add More Baking Soda & Hot Water. Who do I ask to grade and certify my rare coins? Hunting coins will be easier if some specific features are built into your metal detector. Add a base of baking soda directly onto the aluminum foil. WATER One of the simplest ways to clean coins is by using distilled water and a soft towel. Cleaning coins was actually routine by collectors for a long time. Rinse the coin very well under warm water. Why do coin collectors not clean coins? Dry well after cleaning the copper coins. Be careful that acetone is flammable and corrosive. Toolguider.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. How to clean old brass coins? If you are a coin enthusiast, why not become a coin investor, too? This would devalue your coin. One in certified mint state (MS+) could be worth $525. Do not rub with the towel, that will cause micro scratches. The perfect way to clean corroded coins is with water and an abrasive sponge. Can you clean coins without losing value? Soak dirtier coins in a cup of white vinegar The acid in vinegar is great at dissolving stubborn stains or corrosion. how to clean old coins with vinegar make them shine? The reason why you should use this method to clean Roman coins is that it is a safe way to clean old coins. The best way to do this cleaning is under a stream of warm water. Please check above for cleaning methods for bronze and silver coins. After well-time soaking the coins when you rub them with a q-tip or cotton bud, no hairlines are created practically. However, it is worth mentioning that if the coins are very rare, valuable, and collectible - that you intend to exchange or sell- the ideal is not to wash them, as they lose their value. Leave them to sit until they reach your desired level of shine. Tap water is often treated with chemicals, which could cause coin damage. After you have successfully cleaned your valuable coins, the most important task comes after. Simply wrap your coin in foil and place it in a bowl filled with either baking soda and water or salt and water. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>


\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/46\/Clean-Old-Coins-Step-9.jpg\/v4-460px-Clean-Old-Coins-Step-9.jpg","bigUrl":"\/images\/thumb\/4\/46\/Clean-Old-Coins-Step-9.jpg\/aid8735644-v4-728px-Clean-Old-Coins-Step-9.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

\u00a9 2023 wikiHow, Inc. All rights reserved. Sometimes it is obvious. Enjoy! Whether you are a practiced coin collector or just starting to gain an appreciation for coins, you may have an interest in cleaning your coins. So, olive oil is not a better option for silver, copper, bronze or even gold. Be aware that ketchup is mildly acidic, and so may end up reducing the pennys value. Thanks to all authors for creating a page that has been read 158,096 times. The soap should help keep the coin safe while you gently scrub it. Method One: Take about a quarter cup of white vinegar and dissolve about a teaspoon of salt in it by stirring. You can also use a little soap or mild soap, rubbing with the brush, to clean without running the risk of corroding the metal. This is particularly true when it comes to softer metals, like gold and silver. Washing coins without taking certain things into concern may make the coin lose its value. If you really wish to clean coins, make sure you start with coins of no numismatic value. Place your coins in a bowl filled with distilled water and then dip your toothbrush in baking soda. It is advisable to check on your coins every 15 minutes or so to check if the corrosion has washed away. Yes, as a light chemical vinegar can be used to clean grimy coins and collectible coins. This is not how to clean a penny but can give you an idea of how dangerous this method can be.Dissolve as much salt as possible in a quantity of white vinegar. Never apply an acid bath to fire impacted coins, it can cause your valuable coins damaged. Acetone is a solvent, not an acid. Stir it until you can see bubbles. Mix both chemicals at a 50:50 ratio. a colored layer that develops over time. Since this article is on old coins, we are talking pre-1982. When deciding how to clean old coins at home, a lot of people choose toothpaste. How to clean old steel coins? All these factors could result in a reduction in your coins value, making it difficult to sell. However, it can affect the grade of the coin. Wash the coin in warm water. Just keep in mind that this water should be distilled rather than from the tap. To avoid this problem and keep the scratches to a minimum, keep rinsing the coin in the water while brushing. So how do you clean old coins without devaluing them? The solution can be made at home also. If you clean your coin to improve its grade but end up removing detail in the process, you'll find yourself with . Step-1: Take warm water from your sink or kitchen. They could also leave scratches or marks on coins. It might. What is the best way to clean old gold coins? How to polish old coins? Read on for: First things first: Bullion & Collectibles Exchange experts dont recommend cleaning valuable coins on your own. [3] 4 Yes, it is possible to grade coins yourself, although it can be quite a challenge! This is because oxidation is actually coppers natural way of protecting itself. If your coin is not one you plan to sell, then cleaning is possible, but you must be careful. Then we put them back under the cold water tap. Make sure the coins are completely covered in the vinegar. Polishing or rubbing coins can cause unnatural shine or other damage, also reducing the value of your coins. Also, keep in mind that modern-day change has a different metal composition than older coins. Keep them in a cool, dry place. Drop the coin in the acid. For which type of coin hydrogen peroxide is best to clean? Depending on the condition of your coins, you should do this from 30 minutes to up to 12 hours. Lemon juice can substitute for vinegar. Yes - but there are only a few expert ways to clean coins without damaging them! 2023 itphobia.com Design. The chemicals and fluoride can damage the coins. Ans: In most cases, jewelers cloth does not clean coins. Even the ones who do use an ultrasonic cleaner say they work better on silver coins as bronze and copper require a stronger detergent. Very dirty old coins can even be left soaking in vinegar overnight. Coin collectors look for originality, so consider leaving these vintage coins alone. Some people like collecting them and storing them at home. Add some more baking soda directly over the metal. using distilled water. find the best metal detectors forCoins, Relics and Jewelry Hunting here, 7 Best Metal Detector for Coins, Relics and Jewelry Hunting, metal detectors specifically designed for hunting coins, Recycling Electronic Waste In Vancouver Has Never Been Easier, What To Know About Setting Out Engineering Services, Examples of Metal Powder You Can Find at a Supplier Near You, Learning the Basics of Metal Detecting for 2023, Everything You Need To Know About How to Install Wallpaper in Home, 5 Ideas for Remodeling Your Bathroom in 2023, How Does an Ethernet Extender Work: The Importance Of The Ethernet Extender. For cleaning old silver coins, you can use an electrolyte solution and aluminum foil. This involved scrubbing the coin with a fast-moving rotary brush. While no method is foolproof or completely harmless, some methods are more damaging than others. Pat dry with a soft towel, do not rub. Step-3: Take a clean towel for this step. wikiHow is where trusted research and expert knowledge come together. Then take a soft bristle brush and rub the coins gently. In many cases, cleaning old coins can damage their value, so if youre not sure, its best to leave it alone or consult a coin expert. Pull the coins out of the liquid and gently wipe them with a paper towel to break apart the tarnish and dark spots. Drop a post-1982 penny for quicker results, as zinc dissolves faster than copper. It will dissolve all dirt off the Chinese coins. The best way to clean nickel-brass coins is to use an iron coin cleaning solution. It may damage the structure of the coins. In many cases its best to not clean the coins at all, and if you do clean them, use only a mild soap. Like the others, you need a container where your coins can sit without touching or overlapping. If you leave acetone on your coins, it will add brownish haze to their body. Check out our step by step to not make mistakes: To start, hold the coins by the edges and leave them under running water to remove the bulk of the dirt. Check out!if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[320,50],'trendlor_com-medrectangle-3','ezslot_1',123,'0','0'])};__ez_fad_position('div-gpt-ad-trendlor_com-medrectangle-3-0'); All comments are moderated before being published, if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'trendlor_com-box-1','ezslot_4',115,'0','0'])};__ez_fad_position('div-gpt-ad-trendlor_com-box-1-0');report this adPopular posts. After that soak the grimy old coins. Many people collect coins on a professional level. These coins usually have more value when they're left as-is. Pat the coin dry. What Are The Easiest Amazon Job Positions Available? Our tips for how to clean an old coin without damaging it that will follow are strictly for coins that you are not planning to sell for profit. You can easily invest in clean, valuable coins at Bullion & Collectibles Exchange. Money Metals Exchange was named Best in the USA because of our high-quality educational content, great pricing, and white-glove customer service. 5 Ways to Clean Your Pennies Author: www.realsimple.com Then put two tablespoons of salt into the bowl full of isopropyl alcohol. Scrub gently with an old toothbrush and, if the dirt comes off completely, just dry the coins well on a clean cloth and put them away. The best way of cleaning aluminum coins, get a one-liter dish of boiled water and make the washing solution by mixing 2 tablespoons of normal salt. You can buy salt from the nearest convenience store. Email us at exclusive@the-sun.com or call 212 416 4552. Get your aluminum coins soaked in the solution for 10 minutes. Clean copper coins in a vinegar and salt solution. Keep reading to learn how to use ketchup to clean old pennies! A slightly more controversial method with some swearing by it, while others claimed to be left with greasy coins. To clean oxidized coins, you should use acidic solutions. Soak them for approximately 20 to 30 minutes, the acetic acid will dissolve the coin's dirt. Mix cup vinegar with 1 teaspoon of salt in a bowl that is non-metallic. These are acids and are likely to affect the grading of your coin, and any corrosion removed is likely to return at a comparatively rapid rate. How to professionally clean fire impacted old coins without devaluing them? Old coins generally have a higher value than new ones. This method will clean your coins, leaving them shiny again. The short answer to the question is no, cleaning coins does not "hurt" their value. We will use this method to remove any unwanted dust from the coins. Now mix 4-5 teaspoons of washing soda in the hot water and gently mix it with the water. It can be tricky when a coin found on the ground is really dirty because it prevents you from seeing what it is. Then put your fire-damaged coins inside the glass bowl (on the foil paper). What Do Buffets Put in Their Food to Make You Feel Full? What is the value of a 1896 Barber Quarter proof 65? Finally wash coins with warm water and get them dry. [2] 3 Now simply apply the paste to the penny wherever you want it to brighten up. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>


\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/1\/11\/Clean-Old-Coins-Step-3.jpg\/v4-460px-Clean-Old-Coins-Step-3.jpg","bigUrl":"\/images\/thumb\/1\/11\/Clean-Old-Coins-Step-3.jpg\/aid8735644-v4-728px-Clean-Old-Coins-Step-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

\u00a9 2023 wikiHow, Inc. All rights reserved. "It has answer my question on whether I should clean my coins and recommended websites to help find a coin expert. You can let them sit like that for 30 minutes but if they are extremely dirty, its okay to leave them in the bowl overnight. Usually, this means that they are covered in dirt. Can I put anything in a roll-off dumpster? | Minted on the Blockchain, What Is Nikocado Avocado Diagnosed With? Then scrub them with a toothbrush and get them cleaned. For detailed instructions, please check the above-discussed Method-1. Follow our rare coins live blog for the very latest news about rare coins You can use dish soap to clean your coins too! Most of the metal detector units have a function of discrimination which will allow you to weed out the unneeded trash metals. How to clean old roman coins? You can also let the coins sit in a bowl of water for a few minutes as well. You can collect coins as a hobby or out of passion. Using agents other than water to clean your copper coins is not recommended. You can useNail polish removeras mild acetone. You can follow the above-discussed method-10 and method-11 to get your roman coins cleaned. To clean old coins without damaging them, the main tip is to use more neutral cleaning products, which cannot corrode the coins' metal or take their shine off in the long run. You have to be careful to not rub dirt off aggressively when trying to identify a coin. Like before, you can let the coins air dry on the towel after theyve been rinsed. Just plain salt. Some people swear by this method. After two hours, flip the coins over. Store the coins in hardplasticholders. It may be less effective on newer coins that contain lessor noactual silver. So, today I will tell you how to clean old coins without devaluing them. Polishing or rubbing a coin could remove some of its original finish and cause discoloration. So you can be sure that lost coins are scattered all over your neighborhood. Here is the procedure: Get your coins in a bowl that you want to clean. Pour lemon juice into the coins bowl. Head there to choose from a wide selection of new collectibles and old coins, like pre-1933 gold and more! Avoid wiping the coin with the towel as it may cause micro-scratches on the coin. Mix 1-2 tablespoons of salt in a liter of warm water and then soak the coins in the water 12 hours approx. We hope that we have managed to cover everything you wanted to know about how to clean old coins without damage. Aluminum Foil Any aluminum foil will do, what you have laying around in your kitchen will work great. Take some water and mix one tablespoon of detergent and stir them well. The best way of cleaning copper coins is distilled water with gentle soap. Warm distilled water can be used to clean coins. If you have doubts about the coins value, a good coin grading service will enlighten you about that particular coin. Allow them to air dry. But sometimes you come across some old coins that are so badly corroded that you cannot even see the surface of the coin. The audio signal can also give you an idea about the detected object. Handle it carefully until you are ready to rip it because there is pretty much nothing there. Every time you do, you are stripping a little copper off the lining. Wait for about 1 hour, and then use an old toothbrush to remove the most impregnated dirt. You now have a paper-thin wrapper of a coin. Have you heard the question, can I clean my old coins with toothpaste? It should bubble immediately. Hope it will clean your dirty coins awesomely. Make sure that coin wont get touched when mixing soda with water. After all, a shiny coin looks more attractive than a tarnished one, doesnt it? We dry with kitchen paper or equivalent. We open the tap with cold water. Tomato ketchup also can be a good agent for old coins cleaning. Be cautious that this process might leave small scratches all over the surface of the coin which may decrease the value of the coin. After that rinse them off with warm water and dray. Submerge the coins in a shallow bath of vinegar and let them soak for at least an hour. Some products should be avoided as much as possible when washing coins, such as alcohol or bleach and other abrasive products that tend to corrode the metal a lot. How to make Turkish Tea without a Double Teapot? If you enjoy scavenging for old coins, chances are you have found some that are in rough shape. Keep reading to learn how to use ketchup to clean old pennies! Though this method certainly takes the longest time to complete. If the oil starts getting cloudy, discard it and add new if needed. Stir the solution well and soak the bronze coins for approximately 15 minutes. Using the bowl, soak the coins in the vinegar. Roman coins consisted of either gold, silver, brass, or copper. First, gather your supplies. Ready! To avoid this, either purchase distilled water from your supermarket, or clean coins under water from a purifier. After you finish soaking the coins in the salt and rubbing alcohol mixture solution, take the coins and rinse them with the distilled water as distilled water will ensure that any chemical that is left with the coin is rinsed and washed off. This chemical will discolor the face of your coin. Put the coins individually in the acetone. In the 1930s, a common belief was that brilliant is best. As a result, collectors cleaned coins to remove tarnish, sometimes ruining them in the process. Cleaning old coins with lemon juice is a very old and effective method tested by many coin collectors. Cleaning coins can make the image on the front and back clearer, and can remove dirt and grime that has accumulated over years or decades. Keep the coin in the mixture for two hours to a week. Explore numerous ways of how to clean an old coin without damaging it. Still, if you are not satisfied, just wash them with liquid handwash and get them dried. Somemetal detectorshave an LCD display on them which will show whether the target is iron, a nickel, dime, quarter, metal cap, or something else. Then dry them thoroughly using a clean cloth and then store them in a suitcase or place away from moisture. Are VeVe Collectibles Real NFTs? An ultrasonic cleaner uses water, preferably distilled, detergent, and sound waves to clean the dirt off of small items, such as coins. Now soak all coins in the mixture and leave for about 15 minutes. The steps are easy to follow and effortless. Just place your coins in a non-corrosive bowl and let the acid do its magic. Just apply the paste to the coins and keep them for 15-20 minutes. Yes! This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. The most important feature is target identification which will allow you to determine what the target object is before you start to dig it up. Method 1 Basic Coin Cleaning 1 Hold the coin under cold water. You will need a few ice cubes, a clean piece of cotton cloth. It is best to apply the thinnest layer of Vaseline possible. Collecting coins is a great activity. But you also have to be careful not to hamper their value. Do not use dish detergent to clean your coins; its too powerful and abrasive. If you have a historical one in your hands, like this Monroe Half Dollar for example, cleaning an old coin may not be a good idea. Pull out the coins and lightly scrub them with a soft-bristled brush. They are basically built from various sorts of metal including iron. Pick up the coin you want to clean and gently rub the paste over the front and back of the coin in small circular movements. Then rub gently the coins with your fingers and when the dirt is removed out, wash the coin with distilled water. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. As a result, you cannot determine the value of the coin. % of people told us that this article helped them. Answer (1 of 7): It depends on what you mean by old and what kind of cleaning you they need. Good Collector is a reader-supported site. The Type of Coin is Important What is the best way to clean old silver coins? A numismatistan expert on money and coinswill also be able to advise you as to the worth of your collection. This will remove the extra dirt that didnt wash away with the distilled water. It could do more harm than good. This practice works best on pennies produced before 1982. We will use Vaseline for this process. Everything that is used to clean a coin will remove a little metal too. If you have many old coins that you want to clean, there is no need to do this one by one. Store the coins at room temperature. Tabasco sauce can work as well. 8. This first method that we will use is for coins that have a little corrosion or a little dirt attached to it. Place the coins so they are not touching or on top of each other. Dont stack the coins right after you dry them to ensure that they have been dried properly. Then soak silver coins for 4-5 minutes in the solution and then rub coins with the toothbrush. Watch on. Any form of coin cleaning will, at minimum, strip a tiny bit of the lining off. You can soak the coins for at least 30 minutes, a few hours, or even overnight. Keep the coin in the acetone only for 5 seconds. Soak the coins in a bowl of salt water for a few minutes. Some of the most common places where people are likely to find old coins are: What you do with the old coins you find is entirely up to you. Step-4: After washing the coins, dry them off using asoft cotton towel. Some mention using an old, soft toothbrush to lightly scrub, but you risk abrasions that way. Generally, iron coins are not made from pure iron often. For valuable old coins, it is always better to consult with a professional coin grading service before you begin to clean your valuable coins. Let them get dried and then wash the coins with normal water. Approved. As precious metal gold coins should be cleaned without devaluing them. They preserve different historical backgrounds also because coin collectorsfind old coinsvery attractive. This is because dirt acts like sandpaper when rubbed, which could scratch your coin and reduce its value. Because by over scrubbing sometimes coins get spoiled. So it will not damage the coin. Then soak the coins in clean water, and let them dry overnight. On rare oc. A question that has been asked numerous times by coin collectors and potential coin buyers alike. If you keep these features in mind, you will surely be able to hunt coins better than any other new coin hunter. Do not rinse but place the coin on a towel to dry. Since most ways of cleaning will, or at least can, diminish the grade of the coin, cleaning became undesirable to most collectors, especially as looking under a microscope revealed the extent of invisible damage cleaning can do. If your coin has numismatic value, such as being very old or rare, dont clean it.Any cleaning that is possible to do without damaging the value is far beyond what an amateur can do at home. After cleaning the coins with vinegar, just rinse them under running water (holding by the edges) and use the toothbrush to scrub some more. 7. Make sure that the solution is mixed properly. First, ask yourself why you want to clean this coin. Use sandpaper at the top and bottom of the coin to grind through the copper, revealing the zinc. This method works great for silver coins which are covered with mud. We prepare a mixture of hot water and vinegar in a container. 6. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Cleaning old copper coins is easy. After that soak the grimy old coins. This could include white wine vinegar, salt together with lemon juice, or sour milk. Ketchup can restore the copper glow of a penny. Greek coins are made of metal like bronze or silver. Step 1: Line Container With Aluminum Foil. The process is just simple as that. If you have some sticky coins, you can clean them by following this method. But some methods are more damaging than others. Our website uses cookies to improve your experience, which can include personalizing advertising. In a small container, place a small amount of table-salt (1 gram is plenty). Be careful to not let them soak in the Coke for too long, as fizzy soda can dissolve metals. Roman coins have a patina, i.e. If you don't have vinegar . Once clean, rinse them with water and let them air-dry. This is because abrasive substances could destroy a coins surface, eating away at the metal or causing discoloration. Here are some steps for properly storing old coins: 1. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>


\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/24\/Clean-Old-Coins-Step-4.jpg\/v4-460px-Clean-Old-Coins-Step-4.jpg","bigUrl":"\/images\/thumb\/2\/24\/Clean-Old-Coins-Step-4.jpg\/aid8735644-v4-728px-Clean-Old-Coins-Step-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

\u00a9 2023 wikiHow, Inc. All rights reserved. Gently rub the coins on the surface of the towel. Follow the above discussed 5th method of coin cleaning and get your rusty coins cleaned. Keep them in a protective case. Even when it worked, the tarnish returned quickly, necessitating retreatment. Eventually, the zinc will be exposed. Its kind of ancient coin. Is hydrogen peroxide a good answer to the question of how to clean up old coins? Cleaning Copper With Ketchup: Ketchup can be used to clean a variety of copper products. It depends. It devalues the coin and can completely ruin it if done wrong. Easy & Effective Ways to Clean Dirty Coins at Home, 10+ Ways to Clean Your Clipper Blades like a Pro Barber. It is fast, safe, and does not damage the silver. Coin metal compositions change. Step 2: Sprinkle Baking Soda. Method Two: Make a paste of salt and white vinegar. The Vaseline will take the dust with it and make the coin clean. How to clean old rusty coins? You can try a silver polish also. These are baking soda, distilled water, a bowl, and a toothbrush. Look to the lines on the coin. | Family History, Lifestyle & More. For older, condition-sensitive coins, a gentle bath of water and mild hand soap will suffice. Ask a coin expert. Abrasive coin cleaners, such as baking soda, toothpaste, jewelers rouge, and acids will literally remove the upper surface of the coin, leaving it in an irreparable . Now stir the slat with the isopropyl alcohol for a minute. For this, you will need distilled white vinegar, a shallow bowl, distilled water, and a soft towel. Ans: Yes, you can. Could you clean old silver coins with ice? Sellers: $100 RARE bratz doll. Before cleaning old coins, do some research to ensure they are not collectible. You can also use asoft non-synthetic brushinstead of cotton buds. But be careful that isopropyl alcohol is extremely flammable and keep it in a safe place. Soak coins in warm water mixed with liquid dish detergent to clean off light dirt and grime. 103. Discover the best home-based coin cleaning techniques for copper, silver and more. But most of them damage their coins because they do not know how to clean old coins without devaluing them. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>


\n<\/p><\/div>"}. Take small amounts of warm water and baking soda until you have a paste. However, if you clean your coins incorrectly, you risk damaging the face of the coins and permanently reducing their value. The best way to clean Canadian coins is with mild dishwashing liquid soap and a soft-bristled brush.