Wonderful Art Deco era Coro Duette in the shape of an circle with ribbon ends. Pave-set with glittering rhinestones. A Duette is a pin frame that holds two dress clips. The clips are removable for separate use or can be worn on the pin frame. Marked Coro Duette with a patent number of 1798867. In excellent condition. Measures 3 1/4" x 1 1/4"