31+ Omega Seamaster Automatic Chronometer Officially Certified UK. Omega constellation chronometer officially certified vintage swiss automatic watch cal. The omega seamaster is a line of manual winding, automatic winding, chronometer, and quartz watches that omega has produced since 1948.
Omega constellation chronometer officially certified vintage swiss automatic watch cal.
Antique omega seamaster automatic chronometer officially certified cal.351 watch. Große omega seamaster autom, chronometer officially certified, day date, 1969 ! The back of the main plate is stamped with the watchmaker's initials. Helium escape valve with a conical design located at 10 o'clock.