corrosion

Worked ok for me. Results were OK. Check out video. Really simple to do. https://youtu.be/XgUBjaEAFpA

I got interested in a thread by Fool on cleaning sulfur residue off copper. I know there are a lot of cases where one wouldn't want to touch the patina on a metal, and I'm not suggesting doing anything in those cases. I mentioned in that thread a well known method I had used for silver, where...

Had a strange find in my drawer this morning where I have some of my found coins together, just your random assortment of Wheaties, War Nickel's etc. But this morning I noticed that a Barber dime I found earlier this year was discolored (or at least was turning blackish) and noticed it was on...