Auto wind no date window dated M4 (1964), back says anti magnetic, water proof, stainless steel back, shock resistant , runs very well, accurate to a few seconds over a 24hr period
Hex bezel, 23 Jewel.
Bulova 23 (may have changed model Name by '64)
Doesn't quite fit the "footprint" of a Bulova 23. No 23 jewels on dial, 1964 date, etc... Thinking unknow, or something other than a Bulova 23 anyway... Shooter hasn't been around for a while....maybe panning for gold w/ WatchCrystals? Record short on data. PM sent.