IF you decide to try to remove the gunk - in light of other not being able to ruin the value farther - instead of scrubbing it right away, it might be smart to try other solvents such as gasoline, turpentine, kerosene, ethanol, etc. But I would only expose it to it for a small amount of time to see if one of these hit the correct chemical combination to hopefully dissolve the black stuff. Who knows, you might hit on one that the black stuff is very susceptible to and therefore is lifted right off of the coin. It still would be a cleaned coin with no less value than it has now, but at least it would not have scratch marks from rubbing.
How much squash could a Sasquatch squash if a Sasquatch would squash squash?
Download and read: Grading the graders
Costly TPG ineptitude and No FG Kennedy halves
https://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2
Download and read: Grading the graders
Costly TPG ineptitude and No FG Kennedy halves
https://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2






















