Omega Speedmaster professional chronograph ref 105012-66 from 1966 with caliber 321 - Archive

Omega Speedmaster professional chronograph ref 105012-66 from 1966 with caliber 321 - Archive

Iconic Omega Speedmaster chronograph 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, there are two dots. Luminous are very good. Hands are white with stick shapes. The crown has the Omega logo. The outside black bezel has a tachymeter graduated up to 500. It is a screwed back case in stainless steel with engraved outside the Dragon/Horse design and Speedmaster and inside “Acier Inoxydable – Omega Watch Co – Fab Suisse – Swiss Made – 105012-66 – CB”. It is a manual winding movement with caliber 321 and 17 jewels numbered 24952808. The watch has a cover between the case and the movement. The lugs on the watch are very nice and the width is 20mm. The watch was has not been polished. The watch comes with a Nato brown leather strap. It is a beautiful watch in excellent condition mechanically. The dial is in mint condition as well as the hands”. The bezel has a very nice patina even though it shows some sign of wearing. Overall, the watch is in very good working condition and very collectible. The watch comes with the Extract of the Archives.

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 321 with 17 jewels, 18,000 A/h and 44 hours of power reserve. The functions are 60 seconds, 30 minutes, 12 hours, pillar wheel and sub second. It is the base of the Lemania CH27 C12. This base caliber is also used by Patek Philippe or Audemars Piguet.

Measurements

Diameter excluding winding crown: 42mm


Length including lugs: 48mm