What is the difference between a mint error on a coin and a coin that is simply less than perfect?
http://img594.imageshack.us/img594/...img0769a.jpg^^^This is a platinum proof coin that I had looked at by two different people at local coin stores. Right near the edge next to "In God We Trust" there is a mark that looks to me like a small smudge in the metal. One person said that he did not see anything at all on it and then said it was probably just a tiny bit of oil or dirt that would come right off. In the second store the man said it was probably a tiny imperfection in the metal of the coin itself.
They both said it would not affect the value of the set that I have
but they both tried to buy the set off me as soon as they looked at it. One offered me three thousand and the other offered me thirty-one hundred.
My question is, if that is an imperfection in the platinum, is it enough to be considered an error coin? Especially since it is a proof.