Two and a Half Dollars, Panama-Pacific Exposition Commemorative Proof, United States, 1915 S

United States Mint, San Francisco. Obverse: Columbia, seated on a hippocampus, or sea horse. Reverse: Eagle facing left on what appears to be a Roman legionary standard. This and several other commemorative pieces were created at the San Francisco Mint to celebrate the opening of the Panama Canal and the exposition held in its honor. This Smithsonian specimen is the only known proof.
Currently not on view
Object Name
Date made
U.S. Mint, San Francisco
Physical Description
gold (overall metal)
0 (overall die axis)
0 (overall die axis measurement)
struck (overall production method)
overall: dia. 17.8 mm; wt. 4.180 g
place of issue
United States: California, San Francisco
ID Number
catalog number
accession number
Coins, Currency and Medals
Panama-Pacific International Exposition
See more items in
Armed Forces History: National Numismatic Collection
Data Source
National Museum of American History, Kenneth E. Behring Center
Publication title
Glossary of Coins and Currency Terms
Publication URL
Additional Media

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