A rare, early unsigned Coro trembler brooch. Exquisite detail. 3 dimensional, sculpted flowers with hand painted enameling. Enlivened by pave areas of sparkly clear rhinestones. Both the large pink flower and the pink bud to the right of it are mounted on tiny springs so they tremble when the pin is moved. Nice, heavy casting with bright gold plating on the back. Pin measures 3 1/2 inches by 2 5/8 inches. Excellent condition. A very special piece for the serious collector.