United States, 20 Dollars, 1910 ("Roman" Finish Proof)

United States Mint, Philadelphia. Obverse: Liberty with feather headdress, facing left. Reverse: Denomination and date within cereal wreath. The United States Mint experimented with a number of innovative surface treatments for its proof coinage between 1905 and 1915. These included matte and sandblast surfaces that reflected light back in unusual ways. They also included the application of a "Roman" finish, making the surfaces of gold coins look more golden, and more mellow. These experimental surfaces were applied to test new ideas regarding what would work and what would not. The surfaces were also placed there so that the coins that bore them became "special," and could be sold to collectors at a premium.
Currently not on view
Object Name
date made
U.S. Mint. Philadelphia
Saint-Gaudens, Augustus
Physical Description
gold (overall metal)
0 (overall die axis)
0 (overall die axis measurement)
struck (overall production method)
overall: dia. 34.3 mm; wt. 33.418 g
place of issue
United States
ID Number
catalog number
accession number
Coins, Currency and Medals
United States Double Eagle
See more items in
Armed Forces History: National Numismatic Collection
United States Double Eagle
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Government Transfer: US DOTT, USM
Publication title
Glossary of Coins and Currency Terms
Publication URL
Additional Media

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