Ron Guth: In July 2006, American Numismatic Rarities offered a cancelled obverse die from an 1872-dated Double Eagle, speculating that it may have come from the Carson City Mint because of a "C" stamped on the shank. Two other Liberty Head $20 obverse dies have appeared on the market:
1877, attributed to the Carson City Mint, sold in 2002 for $23,000
1882, attributed to the San Francisco Mint, sold in 2001 for $20,700
Heritage 1/2015:4381, $28,200
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