Circa 1959-1961.
Featured here is a vintage Hamilton Thin-O-Matic T-401 in 10K yellow gold-filled case with 14K gold numerals and markers and a pearled track. Powering this watch is a micro-rotor Hamilton grade 663 automatic hand wind movement with 17 jewels that has been recently serviced and kept good time over a 24 hour period. The watch sets and winds smoothly and measures approximately 30mm wide x 40mm in overall length. The inside back case reads: Hamilton W. Co., Lancaster PA., 10K Goldfilled, R980423, Star W.C. Co. Hamilton is triple signed on the watch as seen on the dial, movement, and case.
Featured here is a vintage Hamilton Thin-O-Matic T-401 in 10K yellow gold-filled case with 14K gold numerals and markers and a pearled track. Powering this watch is a micro-rotor Hamilton grade 663 automatic hand wind movement with 17 jewels that has been recently serviced and kept good time over a 24 hour period. The watch sets and winds smoothly and measures approximately 30mm wide x 40mm in overall length. The inside back case reads: Hamilton W. Co., Lancaster PA., 10K Goldfilled, R980423, Star W.C. Co. Hamilton is triple signed on the watch as seen on the dial, movement, and case.