How do I clean corroded 90% silver coins?

Göttinger

Hello fellow detectorists,

usually silver coins and relics come out of the ground pretty clean. But sometimes the soil is pretty harsh wich can lead to the formation of a nasty crust on the silver (I'm not talking about the natural silver sulfide patina). Depending on the conditions sometimes iron oxides (rust) from the soil form a additional layer of crust around the corroded silver item.

I am looking for a way to remove such corrosion spots and encrustations without damaging the coin underneath. Do you have any tipps or suggestions for me?

Bayard1908

EZ-est or Jeweluster will remove rust. You might need to put it on a cotton swab and rub the rusty area directly. This will likely put hairlines on the coin; but, most of the coins we dig aren't worth any more than their silver value anyway.