Few American gold coins combine history, size and scarcity like the 1915-S Panama-Pacific $50 Gold Coin. The San Francisco Mint produced these massive gold coins in both Round and Octagonal formats for the 1915 Panama-Pacific International Exposition. The designs commemorated the opening of the Panama Canal and San Francisco’s rebuilding after the devastating 1906 earthquake and fire.

The Numbers Are Remarkable

The San Francisco Mint struck approximately 1,500 examples of each design. However, buyers showed little interest in the $50 coins at their original $100 issue price. As a result, the Mint eventually melted many unsold examples.

Panama-Pacific $50	Originally Struck	Net Distributed
Round	1,500	483
Octagonal	1,500	645
Combined	3,000	1,128

Consequently, collectors and buyers received only 1,128 Panama-Pacific $50 gold coins across both designs in 1915.

The Round $50 Is the Scarcer of the Two

The 1915-S Panama-Pacific Round $50 Gold Coin stands out for its extreme scarcity. Only 483 examples reached buyers, compared with 645 Octagonal pieces. In fact, PCGS identifies the Round as the U.S. commemorative gold series issue with the lowest number of coins released.

Meanwhile, the Octagonal $50 remains extraordinarily scarce, with just 645 coins distributed. Its distinctive eight-sided design features dolphins around the border. These dolphins symbolize the continuous waterway that the Panama Canal created between the Atlantic and Pacific oceans.

PCGS Population Reports Put the Scarcity in Perspective

Current PCGS population data lists 426 grading records for the Round and 581 for the Octagonal, totaling 1,007 grading records.

At first glance, that total seems remarkably close to the combined net distribution of just 1,128 coins. However, population reports do not provide an exact count of surviving examples.

For instance, collectors can submit the same coin multiple times, transfer it between grading services or resubmit it in hopes of receiving a different grade. NGC has also cautioned that resubmissions affect population figures for these Panama-Pacific $50 issues.

Therefore, the original distribution figures remain especially valuable when evaluating the scarcity of these historic gold coins.

483 Round. 645 Octagonal. Just 1,128 Panama-Pacific $50s distributed.

More than a century later, these enormous gold commemoratives continue to rank among the most historically significant and desirable coins the United States Mint has ever produced.