It seems useless, comparing this 1967 Speedmaster Professional with caliber 321 with a new Speedmaster Professional with caliber 1863. However, starting collectors or Speedmaster-fans might be interesting in the coming up comparison between vintage & new. I already wrote a review on the vintage one, describing the whole restoration process. Since a few months I have bought the 3753.50 (new model) of the Speedmaster Professional, because I ‘needed’ a Speedmaster for every day without being afraid to damage something. I had some caliber 861 and 1861 models before, but I sold them all to finance another time piece or just traded them one-on-one for something else. The 3753.50 seems to be a keeper with its saphire front crystal and display back with the fine looking caliber 1863 movement.

Anyway, still working on it and hope to share it with you within a few days.

Robert-Jan Broer
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Robert-Jan Broer

Founder & Editor at Fratello Watches
Robert-Jan Broer, born in 1977, watch collector and author on watches for over a decade. Founder of Fratello Watches in 2004.
Robert-Jan Broer
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  • Very interested in seeing that, thanks!


  • Hi –

    Please do write this! I am in the throes of trying to decide on a Speedmaster: in my case a Speedmaster pre-Pro that is basically NOS for a fair price, or a new one.

    Decisions, decisions…


  • Fazmaster

    Can you tell me where I can find your review on the pre Pro Speedmaster ? Also looking forward to your comparison of modern vs. vintage caliber 321.


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