Yes, it is signed Coro and it is most likely from the 30's. This beauty measures about 2 1/2 x 1 1/2 and is in excellent condition - except that the stamen or pistils are missing - see image of inside of blossom. No scratches, no missing rhinestones, good safety clasp, no wear even on back. I believe that this could have been part of a Duette. See 9986 for similar but complete Coro Duette.