Superbly-colored 1.25" with additional rim text "San Francisco-1915-California." Depicted are three topless maidens with center woman holding aloft globe in one hand and ship in the other. Complete with Bastian paper. See next item as well. Hake book Collectible Pin-Back Buttons photo example Panama-Pacific Expo Section #270. Comes with Hake's COA. A single pinpoint raised bump near the center catches reflected light but in most light shows not at all and the piece is Exc. displaying Mint. About the second we've seen of this size. Rare.