I've been dealing with a bluish green film on a few nickels from a recent purchase. The nickels have been stored in poly bags for a long time, some up to 40 years. Some show very lite films others very heavy. I have, so far, have had success removing the films with Harco coin cleaner.
Hopefully, this is not what has occurred to your coin. But there was a time, there were little choices/options to safely store a coin. But I think, it would take a high power scope and someone with extensive experience who is capable in recognizing if there is something other than natural toning on your coin.
Leo
The more qualities observed in a coin, the more desirable that coin becomes!
A lot of color on coins comes from the "thin film effect". [Think motor oil on a puddle. It is a refractive optical effect.] The film itself is NOT necessarily green.
Comments
It kinda looks like the coin was already toned some when the picture on the insert was taken
Mr_Spud
Looks like a nice Morgan!
Somewhat common color on that date. Nice coin though.
"It's like God, Family, Country, except Sticker, Plastic, Coin."
I've been dealing with a bluish green film on a few nickels from a recent purchase. The nickels have been stored in poly bags for a long time, some up to 40 years. Some show very lite films others very heavy. I have, so far, have had success removing the films with Harco coin cleaner.
Hopefully, this is not what has occurred to your coin. But there was a time, there were little choices/options to safely store a coin. But I think, it would take a high power scope and someone with extensive experience who is capable in recognizing if there is something other than natural toning on your coin.
Leo
The more qualities observed in a coin, the more desirable that coin becomes!
My Jefferson Nickel Collection
A lot of color on coins comes from the "thin film effect". [Think motor oil on a puddle. It is a refractive optical effect.] The film itself is NOT necessarily green.
Nice one!