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\u00a9 2023 wikiHow, Inc. All rights reserved. An old toothbrush works great. Follow the same procedure and your copper pot will look like new again. Clean pennies only without any other coin or the other coins will become discolored. bottle of Goo Gone brand adhesive remover, Easily removes glue, tape residue, and adhesives, May have to let the coin soak for a while. Mixing the Vinegar Solution Download Article 1 Gather together the pennies you want to clean. The answer is pretty basic baking soda and vinegar lie on opposite ends of the pH scale. Keep your pennies and other coins clean reduces the amount of bacteria on their outer surface, which makes you less likely to become ill after handling them. Gently swirl the cup so the penny is completely covered with ketchup. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. While most posts usually tell you HOW to clean coins, Id like to try something different: tell you how NOT to go about cleaning your coins. Wash your towels with hot water . wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. How can I clean them? 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Stir until the salt is dissolved. Allow the coins to soak for a while to loosen up years of gunk. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Coca-Cola, or any generic type of cola soda, contains acids that dissolve away grime from coins and removes copper dioxide. If your pennies are scratched and newer than 1982, they may end hollowed out. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Wait about five minutes and check your pennies. How To Clean Pennies 1 Easy Trick - Crazy Science Experiment Rinse the penny and your fingers under clean running water and dry with a soft cloth. Start by adding a quarter cup of white vinegar, or lemon juice, into a cup or glass. For those especially nasty pennies, scrub them with a scrubber or toothbrush after they've been resting in the solution for a bit. As a science writer, she explores all aspects of science from mites living books to noctilucent clouds, stretching across the mesopause. By using our site, you agree to our. Removing patina, tarnish, and gunk from those coins is simple using the right cleaning solution. It takes about 5 minutes for lemon juice to react to the penny. Toothpaste is a highly abrasive agent that will strip away more than just plaque it could literally remove metal right from your coin. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. If you're a serious coin collector, you can hire professional services to clean coins in a way that won't diminish the coins' value. Use a soft-bristled toothbrush to scrub the surface of the coins gently to remove dirt. When you put your pennies in a vinegar and salt mix, the vinegar and salt react together and remove the copper oxide. Thank you. Using chemical cleaners or scrubbing the coins could leave scratches and marks that will be easy for a skilled appraiser to pick up on. Last Updated: February 10, 2023 Dip your old toothbrush into the soapy water so that it is thoroughly soaked. Baking soda has a pH of 9, while vinegar has a pH of 2, according to the U.S. Geological Survey. Coin collecting is a fun hobby for children and people of all ages. If your coins have glue, adhesive, tape residue or any unidentified gooey substance on the surface, this is your best bet to remove it. First, lay your dirty penny on top of a piece of paper or clean cloth. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Get DIY project ideas and easy-to-follow crafts to help you spruce up your space. That's what happens when the copper, oxygen, and chlorine (from the salt) combine (called malachite). Depending on the type of metal that your coin is made out of, Goo Gone may also restore the shiny surface to the coin. Vinegar dissolves zinc. As a base, baking soda dissolves organic compounds like dirt, grease and other sticky ickies. Sprinkle in about 1 tablespoon baking soda. How NOT To Clean Coins + Tips For Cleaning Coins Properly Exactly how do you clean old coins with vinegar and baking soda? In this video, Im showing you how to safely clean coins yourself. He has over 50 years of numismatic and writing experience, including a monthly magazine column for the American Numismatic Association. Over time, the surface of the penny accumulates dirt and gets discolored as a result of copper oxide. References. The only downside to using cola to clean pennies is that this process takes a little longer than using vinegar or lemon juice and salt.