Rare old Coro Duette, the brooch or pin that separates into two clips, with the mechanism designed by Coro as well. This one has nice clear rhinestones with aqua blue rhinestones for accents, on silver tone metal. The brooch and the pin fastener are in good condition with mild wear from age. One of the clips has lost the tension spring , so can not be worn separately, the second clip fastens fine, and of course worn as a brooch this is not an issue. This is one of the loveliest of the duettes we have seen. It measures 2 & 7/8" across and 1 & 1/2" tall., and of course signed on the back Coro Duette and patent numbers.