This large, bold pin can also be used as a pendant on a necklace. The large 2 1/2 inch scalloped disc is inlaid with rays of sterling silver and abalone shells. There is a central turquoise colored disc. The back of the pin shows lovely patina from age. The pin mechanism is a safety C-clasp that is in good working order. The pendant mechanism is a loop on the reverse side. The disc is marked with STERLING and also Mexico 925. There is also a number 174 on the back.