can some one please suggest what is the best non destructive and non damaging way to clean old copper coins?
one my engineer frds told me to use a solution of natural white vinegar + non iodized salt in distill water
is it recommended?
Rubber pencil eraser the best way to clean any coin, it will take time but it is natural way to clean coin
respected sir i have suggested some idea, how you will protect your copper , bronze nickel & silver coins from weather effect
& prevent rust . it is a very interesting subject.pl see my front page , you will get some idea, see my coins , i have protected
since last forty years, & till it is same as before forty yrs. thanks
It will take awhile but soak them in Olive Oil.
As far as the Olive Oil. Awhile means up to 3 months.
You aren't kidding when you say awhile. Three months? If you use canola oil does it take six months?
How about hydrofloric acid? That will clean anything.
Buddy Phillips said: "How about hydrofloric acid? That will clean anything."
What the hell is wrong with you? Considering how deadly Hydrofluoric acid is, it is extremely irresponsible of you to suggest this at all. I work with HF acid in my work and I can assure you that it will kill you.
As far the original posters question goes.........The best way to clean a coin is *do not clean it*. If you must, then the long soak in olive oil might work. You might try a good quality ultrasonic cleaner and distilled water. Be sure to place the coin on a piece of plastic netting or something to protect it from abrasion sliding around in the cleaner. Using olive oil in place of distilled water may work but I have never tried it. I would avoid any method that involves rubbing the coin.....especially with a pencil eraser!
If it's copper and bronze coin just apply coconut oil for 4days to 7 days then clean with soft brush you can use tooth brush also [to remove dust ]and clean with water wipe with cotton cloth put it in coin folder and don't clean the coin in salt water if you clean with salt water the coin will get [green fungi] .For nickel and silver use soft brush you use tooth powder if it necessary otherwise you just clean by brush. [Don't use acid to clean coin if you clean by acid no value for that coin]
Numismatic&philatelic association of vellore fort
Please visit :http://numismaticphilavellore.site40.net/
If its not a valuable coin, just go down to the local dollar store and get some Oxyclean. Should shine it right up. Just so you know it won't look natural on a worn coin. No worn coin looks natural after being cleaned.
sorry electrolyte will destroy the coin by removing the entire dark surface leaving rough mart finish , i have tried it my self .in fact i have tried some face wash soap ,in which the coin was kept for about an hour and wiped with soft cotton cloth, dipped again in clean water for about an hour to prevent from any chemical left and wiped with soft tissue paper . this in my openion is best way of cleaning copper /silver coins
Electrolysis is the best way to clean your copper coin,but carefully because it will remove coins patina.
First you must be sure that your coin does in fact need cleaning as you do not wish do damage and devalue a good coin. You must remember that any chemicals such as acids you use to clean your coin is dissolving the surface of your coin so their will always be a negative as well as a positive side to cleaning your coins. Before using any method you decide to use on a valued coin I would advice you experiment with first on a coin of the same metal or alloy. I have a page dedicated to cleaning coins on my website Coin Wiki. I have not long started to experiment myself with coin cleaning but I think you might find what I have learnt useful.