Medals Related to San Francisco

The medal's obverse bears male and female nudes symbolizing the union of the Western hemisphere by the Panama Canal; in background, sun and clouds above horizon with American isthmus. At bottom, DIVINE DISIVNCTA IVNXIT HOMO

The medal's reverse shows the Panama Pacific International Exposition's Tower of Jewels. On panel below building, MEDAL / OF AWARD; around, PANAMA PACIFIC INTERNATIONAL EXPOSITION SAN FRANCISCO - MCMXV

The medal measures 70.3mm in diameter and was struck in bronze by the United States Mint. Plain bronze, silver-plated, and gold-plated versions are known to exist.

References:   Baxter 114, MACo 1915-020, Marqusee 150,151,152

The medal's obverse bears Mercury opening the canal locks for ship Argo. Around, · TO · COMMEMORATE · THE · OPENING · OF · THE · PANAMA · CANAL · M · C · M · X · V; at bottom left, "ON! / SAIL ON!"; signed at bottom right, AITKEN / FECIT

The medal's reverse bears two female figures, representing the two Americas, sharing cornucopias; globe in center, flying birds below. Around, · PANAMA · PACIFIC · INTERNATIONAL · EXPOSITION · SAN · FRANCISCO · CALIFORNIA · M · C · M · X · V ·

The circular medal measures 38mm in diameter and was struck in different materials. They are all "So-called Dollars."  The bronze variant is known as HK-400, the gold-plated one as HK-401.

Many thanks to Eugene and Lu Anne Freeman who granted me permission to use images from their eBay store.

References:   HK 399,400,401

The medal's obverse bears exposition's iconic Tower of Jewels with light rays behind. Around, PANAMA-PACIFIC INTERNATIONAL EXPOSITION; in exergue, SAN FRANCISCO / 1915

The reverse bears laurel branch behind exposition seal at left. Across, HAL / HEMPSTEAD / IN RECOGNITION / OF / FAITHFUL / SERVICE

The circular medal measures 38.3mm in diameter and was struck in bronze.  No mintage is reported.