A rare large silver gilt Coro sterling bug pin. In overall good condition with all the metalwork still bright. There is a claw missing on one of the emerald navettes but the stone is solid in its setting. Signed Sterling on the reverse. It measures 2 7/16” wide by 2 1/16” long. I have included in the photographs an extract describing this pin taken from, " Collecting Costume Jewelry", by Julia C Carroll.