Unearthing Omega Calibre 560 Rarities

It's not so strange that Omega Constellation aficionados are also drawn to the earlier non-aquatic Seamaster models. After all, they share many of the same qualities.

And so, from time to time, you will encounter essays on this site that explore these models. This essay is one such example.

Quite some time ago, I was researching the reason behind why so many 17 jewel movements powered US Collection Omega watches in the 1950s and 60s, when I chanced upon a movement series about which little was written and less was said. And yet, this series, because of the minimal number of pieces produced, meets the criteria for rarity in Omega watches.
This essay is now superceded by an updated one HERE


  1. Graham Smith6:09 pm

    Hi All, Look out on Ebay yet again, Londonseller is about. Please see Ebay auction 270257717620 I contacted Londonseller1 to check on the case number. He replied and stated " Dear grahamsmi,
    Hi.....It is 168005, correct constellation case and movement.Thank you.....Danny
    Unfortunately, a simple check of the omega website shows that movements 561 or 564 belong to this case NOT 504 as Londonseller1 states. I understand that there were only 24,500 calibre 504's ever made (and I have a solid gold example) I intend to inform Londonseller1 what I have found and see if he withdraws the watch from auction as it is not fair on the unsuspecting buyer.
    Thanks all and sincere regards
    Graham Smith (West Yorkshire UK)

    - londonseller1

  2. Nice to hear from you Graham

    Yes, I've had a run in or two with Londonseller, which I think is a somewhat cynical eBay handle as I'm told that most of his watches are shipped from Thailland.

    If I ever published a blacklist of eBay sellers, I'd be sorely tempted to add Londerseller's name.

    Love to see a pic of your 504. My email address is on the site, just substitute the 'dot' for a . Regards