Vintage Rhinestone Floral Coro Duette 1940 Statement Jewelry This beautiful signed Coro Duette pin is signed “Coro” . Pat No. 1798867 is signed on the frame. Clear glass rhinestones intertwine with sapphire blue glass rhinestones in a beautiful floral pattern of dress clips. It measures 3" x 1-1/2". Excellent vintage condition. No missing rhinestones & the clips are strong & tight. Vintage Rhinestone Floral Coro Duette 1940 Statement Jewelry