OMEGA SPEEDMASTER REF. 105.012-65, CIRCA 1965 Three body tonneau stainless-steel case, lyre lugs, fixed bezel with black insert graduated to 500 units, screw back with engraved Seamaster logo, hallmarked inside HF (Huguenin Frères), pump pushers and crown inset in the band. Not original strap and buckle.
Matte black dial signed, luminous bâton indexes, outer minute and 1/5th second divisions, engine turned sunk subsidiary dials for seconds, 12-hour and 30-min registers. White and luminescent hands, luminescent arrow hand for the chronograph.
Signed manual winding movement, copper-plated caliber 321, n. 17301089, antimagnetic dustcover, gilded gears and brushed steel leverage, column wheel system for the chronograph, 17 jewels, lever escapement, monometallic balance with screws, blued Breguet hairspring with guard, Incabloc shock-absorber. 
Diameter Ø: 42 mm 
Note: working, chronograph to be serviced. Original glass with Omega logo aside, cracked on the side.