HK-400, Official Medal in Bronze from the 1915 Panama-Pacific International Exposition in San Francisco.  Also catalogued 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).  Choice Uncirculated, certified NGC MS-64, 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.

NGC 5848933-017