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how to clean pennies without losing value

Author

Rachel Fowler

Updated on August 15, 2026

It is best not to clean rare coins as removing the patina can significantly reduce the value of them. For this reason, most coin hobbyists almost never clean their coins. In fact, 99% of coins do not increase in value after you clean them, but many will be greatly devalued.

How do you clean copper pennies without damaging them?

Copper oxide dissolves in a mixture of weak acid and table salt-and vinegar is an acid. You could also clean your pennies with salt and lemon juice or orange juice, because those juices are acids, too.

How do professionals clean pennies?

Start by adding a quarter cup of white vinegar, or lemon juice, into a cup or glass. Mix a teaspoon of salt into the liquid by stirring until it is dissolved. Place your pennies at the bottom of the cup or glass so that they are not stacked on top of each other. Wait about five minutes and check your pennies.

Will vinegar damage coins?

Baking soda and vinegar have proven to be one of the most effective ways to clean tarnished coins. Submerge the coins in a shallow bath of vinegar and let them soak for at least an hour. If you don’t have vinegar on hand, filtered tap or distilled water can be used as a substitute.

Why does cleaning a coin devalue it?

This is because anything that touches a coin has the potential to damage it at the microscopic level. The more abrasive a cleaner is used to clean the coin, the more likely it is to remove the upper surface of the coin – damage that can never be undone.

How do professionals clean copper coins?

To clean using this method, place your coins in a small plastic container, fill with enough hydrogen peroxide to cover, and soak for 24 hours. After you’ve let your coins soak in the hydrogen peroxide bath, rinse the coins off with water and let them air dry.

What is the safest way to clean old pennies?

Here’s our surefire way to clean tarnished coins:
In a plastic container like those for storing your leftover foods or a small child sized bucket, add 1 cup of white vinegar and soak 4-5 coins in it. Take the coins out and sprinkle some baking soda over them; then use a soft-bristled toothbrush to brush them clean.

Does hydrogen peroxide clean pennies?

Place coins in a bowl and pour enough hydrogen peroxide to cover the coins. Let the coins soak for 24 hours. Rinse them with water, then dry with a cloth.

How much is the 1969 s penny worth?

USA Coin Book Estimated Value of 1969-S Lincoln Memorial Penny is Worth $0.56 or more in Uncirculated (MS+) Mint Condition. Proof coins can be worth $1.13 or more.

Does ACV clean pennies?

Apple Cider Vinegar Technique

Pour Apple Cider Vinegar into a small container drop penny in and wait till it looks clean ( do not leave in to long) rinse rub on a baking soda paste rinse, dry and polish lightly with a soft cloth.

Can you clean wheat pennies without damaging them?

In general, old coins should not be cleaned. While you might think that getting all the years of dirt and grime off a coin would make it more valuable, the opposite is actually true! By cleaning a coin, you may actually damage it and decrease its value. At worst, you could permanently damage the coin.

How do you make old pennies shiny?

Copper oxide dissolves in acid though! Vinegar is a very weak acid on its own, but mixing vinegar and salt creates a slightly stronger acid that will eat away all the copper oxide, and leave you with a nice, shiny penny!

Why does Coke clean a penny?

When the copper oxide (the pennies) and the phosphoric acid (the cola) get together in the bath, the acid reacts with the copper oxide on the pennies and dissolves it. That’s why the pennies get shiny.

Do professionals clean coins?

The Professionals: Numismatic Conservation Service and Professional Coin Grading Service Restoration. There are two services that can more often than not clean your coins properly. First, there is Numismatic Conservation Services (NCS), which operates with Numismatic Guaranty Corporation (NGC).

Should I clean my Indian head penny?

Never Clean a Proof or Uncirculated Coin

No matter the circumstance, there’s never a good reason to clean an uncirculated or proof coin. Even if there is adhesive residue stuck to it, fingerprints, stains or discoloring, leave it alone! Bring it to a professional to remove anything.

What are the 15 most valuable pennies?

15 Most Valuable Pennies Still in Circulation
1944-P Lincoln Wheat Cent Penny: Steel Cent. 1944-D Lincoln Wheat Cent Penny: Steel Cent. 1943-P Lincoln Wheat Cent Penny: Bronze/Copper. 1943-S Lincoln Wheat Cent Penny: Bronze/Copper. 1944-S Lincoln Wheat Cent Penny: Steel Cent. 1943-D Lincoln Wheat Cent Penny: Copper/Bronze.