1915-S Panama-Pacific Exposition Quarter Eagle. MS-66 (PCGS). CAC. Here is an appealing premium Gem quality example of this scarce and conditionally challenging issue in the United States Mints classic commemorative series. Lovely mint luster blends with vivid golden-orange patina. The eye appeal strong and the surfaces are as smooth as would be expected for the assigned grade. From a net mintage of just 6,749 coins, that were initially priced at $4. Charles E. Barber and George T. Morgan combined their efforts to create the designs.