Introducing my jumbo Omega Seamaster bumper with the famous caliber 333 chronometer. According movement’s serial number, the watch was manufactured around 1950. The case is steel made, screw-back, and fat lugs. The caliber is a bumper 30 mm size, small seconds. Cal.333 contains a excenter regulator and its a certificated chronometer. Also the original crown is signed: One lovely thing about the watch, is the original dial with a nice patina, having a beatiful contrast between the 3, 6, 9, and 12 marks. This Seamaster is in very good condition esthetically and mechanically with excellent precisión. As a reference, the family photo with my Seamaster calendar cal.503: Finally a composition photo. Look the nice fonts used in text