Error or typo
I'm looking for some assistance on this one. I recently had a proof Buffalo come back as a MS 70. Very nice grade for the coin except that it is a proof. My question is, since NGC graded the coin by three individuals and went through quality control for accuracy, do I have a special coin(error)worth keeping as graded or is it strictly a typo? Any thougts would greatly be appreciated.
signed puzzled
