How have you been storing it? I once had
some bronze coins in PVC
that developed green crusts, not BD, probably verdigris. Since then I store everything in archival flips
it in what I thought was a Safe Flip
, but I guess it wasn't. I'm moving everything to them now (gotta buy a new batch from FORVM
). It's been in that old flip
for nearly 8 years. At first I thought it was retoning after it had
been cleaned, but it's lookin' ugly.
Anybody have any ideas as to what I can do?