Exceptional Movements In History: Omega Caliber 321

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Exceptional Movements In History: Omega Caliber 321

Postby koimaster » July 24th 2018, 3:55pm

Asking vintage watch enthusiasts which chronographs they might pick as their favorites, one movement quickly comes to mind: the Omega 321.

Their decisions are usually biased by a love of pre-moon Speedmasters the collecting community currently has. Nevertheless, the 321 is an exceptional movement that certainly deserves the praise and attention it receives.

Omega Caliber 321: small but mighty

Caliber 321 is an exceptionally robust, yet elegant chronograph. On the smaller side, it comes in at 27 mm in diameter and a height of 6.74 mm. Compare that to the ubiquitous Valjoux 7750 or the 49-year-old Zenith El Primero, which both come in at a diameter of 30 mm and a height of 7.9 mm and 7.55 mm respectively.

https://quillandpad.com/2018/07/17/exce ... liber-321/


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Re: Exceptional Movements In History: Omega Caliber 321

Postby MKTheVintageBloke » July 24th 2018, 5:21pm

This caliber was most famously used in the Omega Speedmaster since its inception in 1957 through 1965 and then in the Speedmaster Professional from 1965 through 1968, at which point it was replaced by the Omega 861.

This passage is just so fucking wrong. All it does is perpetuate misconceptions.

No, the Professional moniker has not been introduced in 1965. It has first appeared on the reference 105.012-63, introduced in 1963. However, the bloggers are usually far too obtuse to do their research, and they're completely unaware of the existence of references 105.012-63 and -64.
That said, they have some odd notion, that the 105.012 was the successor to the 105.003, while in fact the two were introduced at the very same time.

The whole "...Speedmaster Professional from 1965..." bullshit comes from the fact, that the production of the last Speedy without "Professional" on the dial, the ref. 105.003-65, has officially stopped in 1965. However, the last 105.003-65 cases were equipped with movements from a 1967 batch, and werestill being assembled and available brand new until as late as 1969. That said, the cal.321 has powered non-Pro Speedmasters until 1969.
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