Omega Speedmaster Pro Chrono Mark II – Ref 145.034 – 1972 – Cal 863 - Serviced

Iconic Omega Speedmaster chronograph Professional in stainless steel with a round black dial. The watch has batons for each hour and three sub dials, 3 o’clock with the minutes, 6 o’clock for hours and 9 o’clock for seconds. At 12 o’clock is engraved “Mark II”. Luminous are good. It is a “T Swiss Made T” model. Hands are white with stick shapes. The crown has the Omega logo. The outside black bezel has a tachymeter graduated up to 500. The watch comes with a brand new Omega crystal.
It is a screwed back case in stainless steel with engraved outside the Dragon/Horse design and inside “Acier Inoxydable – Omega Watch Co – Fab Suisse – Swiss Made – 145.034”. It is a manual winding movement with caliber 861 and 17 jewels numbered 31326528”. The watch is from 1972. The lugs on the watch are very nice and the width is 20mm. The watch was has not been polished. The watch comes with an Omega bracelet with ref 1162 and end link 172. The bracelet fits a 7.5 inches wrist. The watch has been serviced.

History

The story of Omega started in 1848 with Louis Brandt when he opened a “Comptoir d’etablissement” a sales office for sub-contracted watch manufacture. In 1880, the brothers Louis Paul and Cesar Brandt set-up a modern watch production unit. In 1889, the company had a production of 100,000 units per year. The name of Omega only appeared in 1903. Omega has developed amazing movements such as the “Labrador” in 1885. In 1917, Omega provided watches to the British army and in 1918 to the American army. In 1957, the speedmaster professional was born and then selected by the NASA in 1965 as the official timekeeper. Today, Omega continues to demonstrate mechanical innovation and remain one of the most prominent brands in the world of watchmakers.

Technical details

Manual winding movement with caliber 861 with 17 jewels, 21,600 A/h and 48 hours of power reserve. The functions are 60 seconds, 30 minutes, 12 hours. It is the base caliber of the Lemania 1873. Created in 1968, the 17 jewels was produced until 1992.

Measurements

Diameter excluding winding crown: 42mm


Length including lugs: 45mm