A friend of mine recently found an old silver coin (1697) with a
lump of what looks to be rust embedded on the face of the coin.
He's tried all sorts of things to get the lump off, but with no
success. Anyone have suggestions?
Now bear in mind, one might not like what you find underneath once
the corrosion is removed....may have a patch of pitting underneath...
Might try soaking it in household ammonia.....I recently cleaned up
a silver jital that way..... Time is anywhere from a few hours to a
week, depending.... The solution might turn blue....so use a tongs or
something to take the coin in and out....Used a small glass bowl for
If that doesn't do it, you can try alternating with the ammonia and
vinegar or lemon juice....cleaning with soapy water between baths...
Good luck to your friend....cleaning patches like that sometimes is
like a crap shoot...
Gary W. Bourbonais