Circa 1960s.
Featured here is an uncataloged vintage Hamilton Thin-O-Matic in an 18K solid gold case with 14K gold numerals, diamond markers, and a pearled track on a sterling silver dial. Powering this watch is a micro-rotor Hamilton grade 691 automatic hand wind movement with 25 jewels that has been recently serviced and kept good time over a 24 hour period. The watch sets and winds smoothly and measures approximately 34mm wide x 38mm in overall length. The inside back case reads: Hamilton W. Co., Lancaster PA., C13032, 18K.
Featured here is an uncataloged vintage Hamilton Thin-O-Matic in an 18K solid gold case with 14K gold numerals, diamond markers, and a pearled track on a sterling silver dial. Powering this watch is a micro-rotor Hamilton grade 691 automatic hand wind movement with 25 jewels that has been recently serviced and kept good time over a 24 hour period. The watch sets and winds smoothly and measures approximately 34mm wide x 38mm in overall length. The inside back case reads: Hamilton W. Co., Lancaster PA., C13032, 18K.