1915-S Panama-Pacific Exposition. MS-67+ (PCGS). CAC. An incredibly lustrous Superb Gem with virtually untouched surfaces. Varied olive-brown hues dominate the complexion, while rich shades of gold, powder bleu and crimson toning accent the borders. Nicely defined for the issue and delightfully matte-like in the fields. To celebrate San Franciscos recovery from a massive earthquake and devastating fires, along with the opening of the Panama Canal, the Panama-Pacific International Exposition was held in 1915 to great fanfare. As part of the celebrations, the Mint was authorized by the Act of June 16, 1915, to issue a series of commemorative coins from the half dollar all the way up to two $50 gold pieces. For the half dollar, Chief Engraver Charles Barber designed the obverse while his assistant George Morgan was tasked with creating the reverse. Up to 200,000 half dollars were authorized to be produced at the San Francisco Mint, but only 60,030 were actually coined, with 30 reserved for the annual assay. Ultimately, only 27,134 were sold at $1 apiece or 6 for $5, and the balance of 32,866 pieces were melted. Most examples are Mint State, though a few did see some brief time in circulation. Gem specimens are scarce and are eagerly sought, especially since the toning and surfaces can be of somewhat variable quality. This CAC-approved Superb Gem is surely among the most desirable survivors, with only 4 pieces graded finer by PCGS.