1982-P Washington Quarter Reverse Missing Clad Layer

I would have guessed environmental toning. Learned a lot from this thread.

Very interesting - I would imagine finding one of these in circulation would be nil - so 20$ seems like a great deal!!!

Then just use that pressurized "Canned Air" they use for blowing dust from computer keyboards. No use for acetone if you don't really need it.

This is a really cool pick-up @qh72--well done!

Fantastic pick at a great price. Congrats QH.

Cool coin! You might not have gotten it for $20 if I had seen it first!

Right or wrong, I have a little different thought on the acetone. When I buy coins that may have been handled by someone at an auction company who was clueless or just didn't care, I do a quick acetone dip and pat dry (no side-to-side motion) with soft cotton just because I don't want to find fingerprints later, after they have etched their way into prominence and permanence because someone was chomping on French fries while sticking the coins in flips. If you don't think the coin is otherwise contaminated, then I would just hit it with compressed air, like others said. I even do that to the holders, too, to get rid of lint or dust. Yes. I am paranoid.

Thanks Numiscrat! I appreciate the the tips. I'm not going to be giving it an acetone dip, most likely will use compressed air at some point. Good thing I asked the forum! tropicalbats, thanks! I'm trying to expand my error collection further, as much as my budget can afford. Usually my main searching points are in Lincoln cents, but I'm going to start branching out into more denominations. The more the merrier!

Very nice pick up! Can't wait to see it from your photography.