Update on the Oysterquartz Perpetual Calendar

Thread: Update on the Oysterquartz Perpetual Calendar

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  1. #1
    GMF
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    Thumbs Up Update on the Oysterquartz Perpetual Calendar

    There was a recent TZ WIS get together in NY in which the following photo was taken:



    Aside from the fact that there is easily over half a million dollars in that picture, I zeroed in on the Oysterquartz in the upper right hand corner: something just something didn't look quite right about it. Then it hit me: it was a 17014 Datejust case but the dial clearly showed this to be a Day-Date model. Bingo! I knew it was one of the Day-Date Perpetual Calendar prototypes since all those prototypes (both Datejust and Day-Date versions) were encased in 17014 cases. I posted my "suspicions" about this watch on TZ and the owner e-mailed me and confirmed it: this is one of less than 11 prototype OQ Perpetual Calendars. Since this is a Day-Date, it has the 5355 movement. I asked about the famously loud OQ tic and he said this movement is "silent as the grave." That confirms that Rolex has developed a completely new escapement and drive motor design for the 5335 and 5355 movements. Below is a better photo of the watch. Unless you knew that a Day-Date would never be in this particular case you'd think you were looking at a regular Oysterquartz. (Let's keep our fingers crossed that Rolex is going to re-introduce the Oysterquartz with these new movements at Basel this spring.)

    ----------------------------
    Grand Seiko SBGT005 (9F83)
    The Citizen AQ1010-03E (A010)
    Longines Conquest V.H.P. (L288.2)
    Bulova Accutron II Alpha (BA101.10)

  2. #2
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    Re: Update on the Oysterquartz Perpetual Calendar

    Quote Originally Posted by GMF
    (Let's keep our fingers crossed that Rolex is going to re-introduce the Oysterquartz with these new movements at Basel this spring.)
    Nice GMF!

    It would be fun if Rolex released a new thermocompensated
    watch.
    The old Oysterquartz movement had nice finish but unfortunately
    it has been said that the accuracy was only +/-60 sec/year. But
    I am not sure if that is correct.
    A new movement with the same fine finish as the old one but with
    higher accuracy and a perpetual calendar would absolutely be
    interesting.
    Breitling Airwolf
    Citizen Crystron 4 Mega (Cal 7370)
    Longines Conquest VHP Perpetual Calendar
    Omega Marine Chronometer (Cal 1511)
    Rolex Datejust Oysterquartz (Cal 5035, Mark I)
    Seiko Prospex Perpetual Calendar
    Seiko Twin Quartz (Cal 9923)
    Sjöö Sandström ORC Extreme Black

    Panos
    Stockholm, Sweden

  3. #3
    HAQ and AW moderator
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    Re: Update on the Oysterquartz Perpetual Calendar

    Yes, it would be desirable to have one of them.

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  5. #4
    Member john wilson's Avatar
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    Re: Update on the Oysterquartz Perpetual Calendar


  6. #5
    Member Bruce Reding's Avatar
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    Re: Update on the Oysterquartz Perpetual Calendar

    Very interesting, Gary. It would be cool indeed if they offered a new, up-to-date quartz.

    Good eyes, btw. Did you learn how the owner managed to get a prototype?

  7. #6
    Member Bruce Reding's Avatar
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    Re: Update on the Oysterquartz Perpetual Calendar

    Quote Originally Posted by john wilson
    Nice Omega, John. I take it that you may have meant to post this as a new thread?

  8. #7
    GMF
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    Re: Update on the Oysterquartz Perpetual Calendar

    Quote Originally Posted by Bruce Reding
    Very interesting, Gary. It would be cool indeed if they offered a new, up-to-date quartz.

    Good eyes, btw. Did you learn how the owner managed to get a prototype?
    It was simply a matter of "who you know and being in the right place at the right time."
    ----------------------------
    Grand Seiko SBGT005 (9F83)
    The Citizen AQ1010-03E (A010)
    Longines Conquest V.H.P. (L288.2)
    Bulova Accutron II Alpha (BA101.10)

  9. #8
    Member Bruce Reding's Avatar
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    Re: Update on the Oysterquartz Perpetual Calendar

    Quote Originally Posted by panosd
    The old Oysterquartz movement had nice finish but unfortunately it has been said that the accuracy was only +/-60 sec/year. But I am not sure if that is correct.
    The old Oysterquartz was among the first (it may have been the first) thermocompensated watches. They opted for a totally analog thermocompensation method that was clever, elegant, but ultimately could not match the performance of more modern thermocompensation methods. They never officially claimed a performance specification (that I'm aware of at least), but the word is that one could expect drift to be less than sixty seconds per year. The experience of those here who have had one corroborates this.

    Their method, and other thermocompensation schemes, is covered in depth in the article that hedrick has recently reposted.

  10. #9
    Banned ppaulusz's Avatar
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    Re: Update on the Oysterquartz Perpetual Calendar

    Quote Originally Posted by Bruce Reding
    ... They never officially claimed a performance specification (that I'm aware of at least), but the word is that one could expect drift to be less than sixty seconds per year...
    Well, the only official claim was that it was awarded the COSC (against the pre-2001 standards) that meant an accuracy better than +/-73 seconds per year.
    Gary was spot on with his observation that the new OysterQuartz with perpetual calendar uses different technology not just a perpetual calendar add on by observing that the new movement is silent.

  11. #10
    GMF
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    Re: Update on the Oysterquartz Perpetual Calendar

    Quote Originally Posted by ppaulusz
    Well, the only official claim was that it was awarded the COSC (against the pre-2001 standards) that meant an accuracy better than +/-73 seconds per year.
    Gary was spot on with his observation that the new OysterQuartz with perpetual calendar uses different technology not just a perpetual calendar add on by observing that the new movement is silent.
    Well, just looking at the movement I had concluded it was a totally new design. The silence just confirms that the escapement and motor drive is different, too.

    ----------------------------
    Grand Seiko SBGT005 (9F83)
    The Citizen AQ1010-03E (A010)
    Longines Conquest V.H.P. (L288.2)
    Bulova Accutron II Alpha (BA101.10)

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