Breaking News: Omega resumes production of the caliber 321, the Speedmaster movement that went to the moon


If you ask most fans of watches to name a famous movement that they would like to see reborn, you are bound to hear them mention the OMEGA Caliber 321. This sturdy and elegant chronograph movement has been a favorite since the 1940's and is still a lot sought After collectors of watches around the world. Now, more than 50 years after the production of the last Caliber 321, OMEGA is bringing back the iconic movement.

Known for its wonderfully complex design, the original Caliber 321 was the first movement ever used in the OMEGA Speedmaster in 1957. In fact, it had previously been used in some other OMEGA chronographs, namely the Seamaster collection. It stands out by the use of a monobloc column wheel, a part that is machined from a single piece and adds technical value. Generally, the movements of the speaker wheels require very careful precision in design and construction, making them popular among watch collectors.

In addition to its construction, the original 321 caliber also gained a very remarkable place in history. It was used in several models, including the Speedmaster ST 105.003 (the first model tested and qualified by NASA and used by the astronaut Ed White during the first American space walk) and the Speedmaster ST 105.012 (the first watch used on the moon).


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