Suzanne Steward of Abacus Coins, Va., sent in several interesting errors. The first is a 1947-S Washington quarter that at first glance appears to show a series of die breaks on the reverse. However, after a closer look I found the effects to be the result of occluded gas within the planchet itself. Gas along with …
Full Article: Strange Planchet Effect Due to Trapped Gas – NumisMaster
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