This bar pin dates from between 1900 and 1920. It has a c-catch and modern hinge. The chased design of the silver setting is Art Deco. The bezel-set cabochon "unborn pearl" comes from the inside of the shell at the joint. This pretty pin measures 2 1/4" long X 3/16" wide X 3/8" thick. There are no marks, but the pin tests sterling.