Official Medal in Bronze from the 1915 Panama-Pacific International Exposition in San Francisco.  Also cataloged as SH 18-1 'Bright Bronze' in Jeff Shevlin's listing of West Coast Exposition So Called Dollars - the SH number added to the NGC label (a new service they offer). An original specimen with interesting toning. Light bluish-green highlights over reddish-bronze surfaces, a bit hard to pick up in images however readily evident on the piece when viewed in person. The colors are slightly deeper/darker on the Reverse, indicating that this piece was sequestered somewhere undisturbed for a long time.  Due to the planchest used, 'Bright Bronze' pieces vary widely in actual color, as can be seen in the MS-65 example also offered (NGC 2384328-002, if still available).