I guess many have heard of the 1970-S Washington quarter overstrike of a 1941 Canadian quarter. Anyone have any idea how this occurred? Is it considered legal? I question the sudden appearance of a number of these overstrikes on E-Bay. One was NGC certified. No value is given for the overstrike by NGC. Several were pricing the coin at $31,000 and $35,000 and one was of great value at $500. I even had a fellow ask me aout the coin as I was waiting in line at the bank. Your thoughts?