Does anyone know what the chemical reaction is that takes place on clad coins long buried in the ground? Is it a galvanic reaction between the copper and silver? Can it be reversed electrically using electrolysis?
and....
I am not sure if one should be using an acidic cleaner like vinegar, or a basic cleaner like ammonia to do the best/quickest job when cleaning clad in a tumbler. Do you use the same batch of tumbling media for both copper and clad coins, and just run them separately; or have separate media for each?
and....
I am not sure if one should be using an acidic cleaner like vinegar, or a basic cleaner like ammonia to do the best/quickest job when cleaning clad in a tumbler. Do you use the same batch of tumbling media for both copper and clad coins, and just run them separately; or have separate media for each?