BadThad, what effect did pyridine have (or other amine solvent if you did try it)? Have you tried peroxides? (i.e 3 to 30% hydrogen peroxide)?
Has anyone used other solvents on coins? Such as Diethyl ether, Dichloromethane, Hexanes, Benzene, Ethanol, ect. Halogen solvents I doubt would...
"Nickels contained 30 percent silve rin 1942 1943 1944" I believe that it is 35% silver (Ag) and not 30%.
I love palladium, I have a couple research publications with platinum and one with palladium. A few are being reviewed for acceptance right now....
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