1999-P 25C Delaware Quarter--Struck on Experimental Planchet--MS66 PCGS....
Experimental 1999 Delaware Quarter Planchet, MS661999-P 25C Delaware Quarter--Struck on Experimental Planchet--MS66 PCGS. In 1999, the U.S. Mint was devising an alloy for the eventual Sacagawea dollar that would have gold color, but possess an identical electro-magnetic signature as the Anthony dollar. This would allow Sacagawea dollars to be visually distinctive yet usable in existing vending machines. "Golden" alloys were tested on a few 1999-dated statehood quarters, presumably since no dollar planchets were available. Some regard these pieces as patterns rather than mint errors, although it was certainly an error when they left the mint. This gold-alloy specimen is well struck with pristine preservation and slightly irregular rims, as if the collar die was absent or too widely spaced.
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