I like this particular watch from Omega, the watch has a screw back case with the beautiful Seamaster logo engraved in the caseback. The classy en minimal dial from this watch came in a few styles; Seamaster 600, Seamaster and Geneve. This particular piece has the Seamaster 600 dial fitted into the 136.012 case. The caliber 611 manually wound movement by Omega has the 21****** serial number which dates back to 1964.
Background information on Omega Seamaster 600
International Collection (Gents watch)
Produced in: 1959-1969
Case reference number: ST 136.0011 (136.011 34,4mm) and ST 136.0012 (136.012 32,4mm)
Movements: Manual winding (mechanical) Cal.600 (no date) Cal.613 and Cal.611 (date window)
Reference numbers can come with different dials: Seamaster, Geneve and Seamaster 600
All stainless steel screw in caseback
Armoured hesalite crystal
30M waterproof
Watch Photograhpy – Horloge Fotografie