Cameo brooch of the Greek mythological hero Hercules set in 18K (tested) yellow gold, custom -made frame with glass (locket style) on reverse, 54.2 gr gross weight. It has a dual pin back; upper pin with built-in safety probably added later to eliminate flopping, lower pin has C-clasp with safety; brooch measures 2 1/14 inches by 2 1/2 inches; dates from late 1800's, mint condition