New Oysterquartz info

Thread: New Oysterquartz info

Results 1 to 2 of 2
  1. #1
    GMF
    GMF is offline
    Member GMF's Avatar
    Join Date
    Apr 2005
    Location
    34.93N - 81.92W
    Posts
    118

    Exclamation New Oysterquartz info

    A former Rolex insider who gave me a lot of the info on the OQ perpetual calendar movements has told me that there was one substantive change to the 5035 and 5055 movements that took place approximately 18 months after they were introduced for sale to the public. The quartz crystal was changed to one cut in the shape of a tuning fork. He didn't elaborate on the previous shape. He just said the earlier movements were known internally at Rolex as Mark I movements and the later ones were known as Mark II. Only Mark II 5035 movements were submitted to the COSC for chronometer certification, which would explain why the early Datejust OQs didn't have the "Superlative Chronometer Officially Certified" wording on the dials.
    ----------------------------
    Grand Seiko SBGT005 (9F83)
    The Citizen AQ1010-03E (A010)
    Longines Conquest V.H.P. (L288.2)
    Bulova Accutron II Alpha (BA101.10)

  2. #2
    Banned ppaulusz's Avatar
    Join Date
    Feb 2006
    Location
    Budapest, Hungary
    Posts
    3,654

    Re: New Oysterquartz info

    Interesting info from a reliable source.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •