Quite a bit of the gunk would come off.
Could be - gotta try than just sit back and give up!! Anything helps! With Acetone and Verdi-Care
why not at least try? Alot of times none of that treatment helped some of my coins but maybe even though not got rid of it but maybe stabilized it!
Completed the Dansco 8166 Album
(1964-2011) Kennedy half
w/Proofs on Dec 3rd.
Now working on the Dansco 8167 Album
(2012-Date) Kennedy half
26pcs, of 28, so far