I been reading a lot lately hmm-- one of things I came across is that a lot of these coins of different color which we classify as environmental damage could be cause by improper plancet and this information came from the mint so I started to take down different dates and notice that a lot of them are under certain dates.one example is 1999 quarters-- we know about the golden looking one but they stated that they used different ones-- Are you aware of this?
Improper alloy mix and improper planchets are errors and I can't see how they could be taken as environmental damage. Damage and toning represent different levels of environmental exposure. Not sure what you are talking about with the 1999 quarters.
Any reference for this? https://mikebyers.com/15873698.html https://www.coinworld.com/news/precious-metals/alloy-state-quarters-collectors-clearinghouse.html
No cause I wasn't expecting anyone to ask-- you check eBay you can see one of two-- all got certification by pcgs
What I notice is that certain dates have these mistakes-- I notice that 2019 and 2000 seen to have a lot of mistakes and it makes me wonder?
After reading the Coin World article I would say a better description would be struck on questionable planchets, not experimental planchets. Maybe "questionable fabrications made in the mint". To me that put them in the same category as the "struck on a nail", or struck on a much older or old foreign coin pieces. A contrived piece.
I have a couple black beauty nickels from 1959, the result of improperly annealed planchets. They are surprisingly affordable.
