cleaning silver coins with aluminum foil, baking soda, and boiling water.

We generally don't collect/store/display Silver coins in a fashion that retains their original surfaces.

For expensive coins that I locate in semi-original condition, they are stored with others in large sealed and evacuated containers having a replaced slightly positive Nitrogen atmosphere.

I've seen no oxidization resulting over 50 years with this conservation process.

JMHO

 

Log in or Sign up to hide this ad.

Cleaning almost always ruins or at least devalues a coin. There are safe methods out there, but the rule of thumb in the previous post covers it pretty well.