You are looking at one of the classic legends in Omega watches: a 14K solid gold cased Seamaster chronograph with the caliber 321 movement, from around 1956.
The diameter of the case is 35mm, not including the crown. The original silver dial has developed a slight even patina, but it is in excellent overall condition, and so are the hands.
The watch was serviced by the previous owner about 3 years ago and has not been worn much since then. All functions are working fine, but there are no future mechanical performance guarantees. The gold plating on the crown shows slight wear, but even with that, the watch is in very good cosmetic condition.
The watch will come on a new old stock original vintage Omega lizard band and Omega buckle, so it is ready to be worn.