1915-S Panama-Pacific Exposition Gold Dollar. MS-67 (PCGS).This outstanding Superb Gem is intensely lustrous with a frosty texture to both sides. Vivid medium gold patina and a silky smooth appearance further enhance already memorable eye appeal. It is little wonder that this exquisite coin ranks among the finest Panama-Pacific Exposition gold dollars known to PCGS, making it a significant find for the collector assembling an advanced set of classic commemorative coinage.