Hi all, I saw this thread about the quarter stamped on a different planchet and I'm very interested in you ever found out any more info on it. I have a very similar quarter 1988, tarnished/oxidation, 5 gram and slightly smaller diameter. It looks flattened/smashed and the out cladding have expanded past the core looking something like a thin Yo-Yo. You can still the knurls or edge ribbing in the groove. I'm stumped.