QUOTE(syzygy @ Sep 23 2006, 08:00 AM) [snapback]257501[/snapback]
Yes these are interesting! I have a similar example (shown below) in my collection. Unfortunately, the opinions I received were mostly along the lines of "after minting damage". Acid? Sandblasting? Who knows how these things get to be this way, but it is difficult to show that they left the mint looking this way.
Mine look exactly like yours. It is also strange that the diameter is reduced and there is no rim whatsoever.
I am not able to weigh them, but I would guess they are half the weight of a normal coin.
More information is always welcome
Regards
Jos