That’s called oxidation. It’s environmental damage as the copper reacts with the air although it is a pretty cool color it adds little value.
📋 Item Submitted
Brown color
M
Marc's Expert Appraisal
ANA-Certified Numismatist · Hudson Valley Numismatics
Similar Appraisals
I was told this was not an error but it seems like it to…
It's a 1985 cent, and appears to be minted properly. What about it suggests an error?
Is this a error coin the ear on face looks weird
I tend to think no.
Elgin starlite 17 jewel ladies watch WWII stack on pearl harbor $5 coin Hawaiian…
The watch and pearl harbor piece, a couple bucks, as the watch is not gold and has heavy wear, and the coin,…