Vintage Hamilton Thin-o-Matic Calendar 10K GF Automatic Wrist Watch ** In Box **

This is a Hamilton Thin-o-Matic Calendar circa 1960's automatic wrist watch. This classic vintage wrist watch has an American made innovative micro-rotor automatic movement, where the rotor is integrated into the movement rather than sitting on top of it. The historically significant Thin-o-Matic with its slim profile, was introduced in 1959. 

Watch case is 10K gold filled and is 32 mm wide (not including crown), 37 mm in length (lug to lug), and is in very fine condition. Watch comes in what could be the original box as the style and price tag look reasonable. Please see photos!

We tested this watch on a watch winding machine for several days where it kept excellent time. On our professional timing machine, watch was timed to within 30 seconds a day on a full wind and has a clean trace on our machine. 

Watch band is a Spiedel with gold filled top, most likely a replacement.

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