put it on eBay! " one of a kind, look at today and posted on CT." Opening bid: millions! or just spend it
Gotta love the educators on here. The states quarters with a Philadelphia (P) mint mark are copper/nickel clad. If that coin had an San Francisco (S) mint mark, it could be silver, then you would have something worth more than face value. There are mint errors that can cause coins to have different colors, i.e. missing clad layers and improper annealing, the first being easy to spot.
1. Why talk about something completely unrelated to the question and coin in the OP? 2. S makes circulation strikes and proof strikes from Cu-Ni as well. A proof error is uncommon, and a silver proof error is even less common... but again, that's not what he has. 3. Sure, there are plenty of errors that can cause a different color. But what he has is definitely not one of them.
Why waist your time trying to tell me what I said was true but you would not say. The OP obviously had hesitations because of the color of the coin. I guess he should just take a yes or no answer about every coin he runs across and just leave it at that.