This can happen with normal oxidation. I think interesting colors are cool but it has to be "rainbow" toning to be worth much more.
📋 Item Submitted
2017 D 25c color appear black O.R./2007 10c xtra material /1982 P 25c P DDOR/25c1989 D DDOR
M
Marc's Expert Appraisal
ANA-Certified Numismatist · Hudson Valley Numismatics
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