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1999-P 25C Pennsylvania Statehood Quarter--Experimental Planchet--MS67 PCGS. The U.S. Mint conducted metallurgical tests as...
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Sold on Oct 25, 2006 for:
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Description
Rare Experimental Planchet Pennsylvania Quarter
1999-P 25C Pennsylvania Statehood Quarter--Experimental Planchet--MS67 PCGS. The U.S. Mint conducted metallurgical tests as part of its development of an alloy for what became the Sacagawea dollar. Presumably, quarter-size planchets and dies were more convenient to use than their mini-dollar equivalents. A small number of experimental planchet state quarters are known for each of the five 1999 states: Delaware, Georgia, Pennsylvania, Connecticut, New Jersey. These dies would have been available by early 1999 for production of proof sets. Some of the experimental planchet pieces were analyzed with energy-dispersive x-ray spectroscopy to determine their composition. The predominant metal was copper, followed by zinc, with traces of manganese and nickel present. This lustrous and unblemished yellow-green Superb Gem has streaky, granular surfaces, as made. The rims are particularly striated.Coin Index Numbers: (NGC ID# 249F, PCGS# 5946, Greysheet# 5775)
Auction Info
2006 October Dallas Signature Coin Auction #428 (go to Auction Home page)
Auction Dates
October, 2006
24th-25th
Tuesday-Wednesday
Bids + Registered Phone Bidders: 18
Lot Tracking Activity: N/A
Page Views: 8,087
Buyer's Premium per Lot:
15% of the successful bid per lot.
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