Guest Post: Lemania 27/3000 – The “moon watch” caliber 321s lesser known cousins

Most people having a vague interest in vintage watches are aware of the Omega caliber 321. The (possibly) only caliber watch that has been worn on the moon.

Lemania 27 321 history1

What many fail to notice is that the caliber 321 actually shares a family history with a range of other movements as well.

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