Betty Cooke is a Baltimore jewelry designer who works, primarily, in sterling silver. Some of her earlier pieces included stones or ebony. She has, always, used simple designs that exude elegance and style. This example, from the 1960's combines two sterling silver discs and one ebony disc on suspended movable arms. The piece can be worn as a pin or a pendant. It measures 4 1/2 inches in length. The top disc is 15/16 of an inch. The smaller sterling disc is 5/8 inches and the ebony disc is 1 inch. It is possible that a previous owner used lacquer on the silver. I have photographed both silver pieces separately for edification. The pictures best describe condition. The piece is marked, "Sterling," and signed, "Cooke." Higly desirable and collectible.