Never clean old coins, pennies, nickels, dimes, etc... Coin collectors want the natural patina. If the pennies have dirt on them then soak them in water to remove the dirt.
But don't use any detergents. Detergents can damage the surface of the coin and leave pitting lowering the value of the coin. Also do not rub the coins together to loosen the dirt, this can scratch and wear the coins and lower the value.
Coins (US Coins) will be worth face value to a non-coin collector, but if you plan to collect coins or just clean them to sell as collector pieces, then don't clean them.
The short answer is, do not clean your coins.
WARNING - There is no way you can clean a coin without damaging the finish and reducing any collector value it may have.
Some coin catalogues suggest that you might use a soft brush on copper or bronze coins and, that there are professionals capable of cleaning coins.
Since you state that your coin is valuable, go with the short answer and do not clean your coins.
The short answer is, do not clean your coins.
WARNING - There is no way you can clean a coin without damaging the finish and reducing any collector value it may have.
Some coin catalogues suggest that you might use a soft brush on copper coins.
Fruit punch does clean pennies the best? You can't clean pennies with orange juice because it doesn't clean it.
It does actually..... I did it in 5th grade and the penny was SHINY...... she let me take it home
yes
it tjt
no, lemon juice is better to clean a pennie
Mostly as I know, lemon juice or vinegar can be used to clean copper pennies. You can let soak in for a while to clean them. Good luck in cleaning them!
its is good for cleaning with
yes, it does
acid
yes
yes
you can clean a penny with soap or try something that clean 99% of germs.