Is it good to clean old pennies?

Cleaning old coins might seem like a good way to revitalise the appearance of a treasured item, but could in fact reduce a coin's value significantly, and should be avoided. Particularly in the case of old precious metal coins, cleaning them is most definitely not recommended!

Is it okay to clean old pennies?

This is never advised for the general public. There is no benefit to attempting to clean a collectible coin. Copper never re-tones to its original color and look anyway. Put down the polish before you destroy something historical and throw away a fortune.

Should you clean old penny coins?

According to coin experts, cleaning any potentially collectible coins might cause them to lose value. Using chemical cleaners or scrubbing the coins could leave scratches and marks that will be easy for a skilled appraiser to pick up on.

What do you do with dirty pennies?

Take the coins out and sprinkle some baking soda over them; then use a soft-bristled toothbrush to brush them clean. Rinse them out thoroughly with hot water; using tongs or gloves to hold them to avoid burning your fingers. Place them on a soft, cotton towel and leave to air dry.

Why does cleaning coins decrease value?

They can remove some of the original finish or tone and even cause scratching, so they are viewed as a major negative in the world of numismatics. Polishing or rubbing coins can cause unnatural shine or other damage, also reducing the value of your coins. Cleaning is a factor in coins not qualifying for grading.

Cleaning coins: My favorite technique

How do professionals clean old coins?

Vinegar and salt

According to research professor Vinod Patel, washing coins with natural white vinegar and iodized salt in distilled water is a non destructive way of cleaning coins.

Why do people clean coins?

It was a common practice for coin collectors to "clean" their coins to keep them in mint condition. As time progressed, more and more metal was removed from the surface of the coin and thus destroying some of the finer details on the coin.

What is the fastest way to clean pennies?

For many pennies, one tablespoon (15 g) of salt in 1/2 cup (4 oz) of vinegar will get the job done. Stir the mixture to dissolve the salt. If you don't have vinegar, use lemon or even orange juice. Copper oxide (the gunk on your pennies) dissolves in weak acid, and that's just what all three of these liquids are.

Why do pennies turn black?

When oxygen binds with copper, they form a new molecule known as copper oxide. Copper oxide is brownish or sometimes black in color (depending on other things in the penny's environment). This is why most pennies you see look dirty or tarnished—it's not actually dirt but copper oxide that makes them look so dull.

Why does Coca Cola clean pennies?

The soda cleans the pennies because it contains phosphoric acid. Phosphoric acid breaks down the copper oxygen compound and causes a new layer of the copper to be exposed.

What years of pennies are worth money?

Should you clean coins for collecting?

Handling Your Collection

While you may be tempted to polish your coins to make them look shiny and new, proceed with caution. Polishing and/or cleaning coins can reduce their value.

How do guys clean their private area?

Gently wash your penis each day. Carefully pull back and clean underneath the foreskin, as well as the tip of your penis (the glans) using only water and a very gentle soap. Don't scrub this sensitive area. It is fine to use soap, but using too much could irritate your penis.

How do you make a penny shiny again?

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!

Can water clean a penny?

Before trying to clean the pennies with salt and vinegar, have your kids try to wash them with soap and water. Soap and water won't clean the pennies because oxidation is a chemical change. Washing pennies with water is a physical change. The pennies will need a chemical reaction to make them shiny again!

Why does lemon juice clean pennies?

Pennies are made out of a metal called copper. The copper mixes with oxygen, the same gas that we breathe. This cause something called oxidation and makes the penny look dirty. Lemon juice has acid in it that removes the dirty color or oxidation and makes the penny nice and shiny again!

What happens when you put a penny in salt water?

If the penny in your salt water solution got shiney, it obviously underwent a chemical reduction reaction. The copper oxide was reduced to shiney copper. These types of chemical reactions are called oxidation reduction reactions. Something gives up oxygen (or something similar) and is reduced.

How do you clean old pennies without devaluing them?

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.

Does Toothpaste clean a penny?

Don't use toothpaste – Toothpaste is extremely abrasive. It can make your coins appear shiny, but cause significant damage to the surface. Don't use ketchup – You might have learned in science class that dipping a penny in ketchup can restore their shine.

Why do pennies turn green?

When copper is exposed to oxygen, it forms molecules called copper oxide that make pennies look dirty. Pouring vinegar over the pennies helps break up this copper oxide and expose the pure copper on the penny. As the penny dries and is exposed to the air, a chemical reaction occurs and the penny turns green!

What is the safest way to clean coins?

Place your coins in a bowl and pour enough white vinegar to cover the coins. Let the coins soak for at least 30 minutes but no longer than overnight. Remove the coins and gently scrub the residue with the toothbrush. Rinse the dirt off with water and dry with a cloth.

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).

What pennies are valuable?