Circa 1959-1962.
Featured here is a vintage Hamiltom Thin-O-Matic T400 in 10K yellow gold-filled case with yellow embossed numerals, luminous dots, and a pearled track. Powering this watch is a micro-rotor Hamilton grade 663 automatic hand wind movement with 17 jewels that runs strong and kept good time over a 24 hour period. The watch sets and winds smoothly. The inside back case reads: Hamilton W.Co., Lancaster PA., 10K Goldfilled, 36262. The watch measures approximately 33mm wide x 38mm in overall length. Hamilton is quadruple signed on the watch as seen on the dial, crown, movement, and case.
Featured here is a vintage Hamiltom Thin-O-Matic T400 in 10K yellow gold-filled case with yellow embossed numerals, luminous dots, and a pearled track. Powering this watch is a micro-rotor Hamilton grade 663 automatic hand wind movement with 17 jewels that runs strong and kept good time over a 24 hour period. The watch sets and winds smoothly. The inside back case reads: Hamilton W.Co., Lancaster PA., 10K Goldfilled, 36262. The watch measures approximately 33mm wide x 38mm in overall length. Hamilton is quadruple signed on the watch as seen on the dial, crown, movement, and case.