While the patent number on the back is difficult to read, there are enough of the first numbers to find it to be dated about 1932. Gold-tone and signed by Swank, the clip also known in early patents as a cravat holder was a popular style for gentlemen of the 1930's and 1940's. Measures 2-1/8 inches. Tiny holes on each end indicate there was most likely a chain or some type of suspended ornamentation at one time. Nice gift for collectors of vintage jewelry for men.