Zenith Defy - 1970's
Like Tree7Likes
  • 4 Post By tag34iw
  • 2 Post By sempervivens
  • 1 Post By tag34iw

Thread: Zenith Defy - 1970's

Results 1 to 7 of 7
  1. #1
    Member
    Join Date
    Jan 2020
    Location
    Isle of Wight
    Posts
    5

    Zenith Defy - 1970's

    In the early 1970's my Dad bought a Zenith Defy - the serial number is 576D128 which I believe denotes the model as A3645. After he died the watch was passed onto me - I have recently had it serviced with the intention of it being my daily wear - just like it was for my Dad for about 50 years. What I am looking for is a user manual - I never thought to discuss the mechanics of the watch before, such as setting the date etc. I found a manual online but this says that it is for the El Primero - are the instructions the same or are there important differences - any help appreciated.&nbsp;<img src="attachment.php?attachmentid=14813829&amp;stc= 1" attachmentid="14813829" alt="" id="vbattach_14813829" class="previewthumb">
    Attached Images Attached Images


  2. #2
    Member
    Join Date
    Jan 2012
    Location
    Edinburgh, Scotland
    Posts
    474

    Re: Zenith Defy - 1970's

    Can’t help but that looks a really great example with the added bonus of family history. Complete with bracelet too. Your late father obviously had great taste.

  3. #3
    Member
    Join Date
    Jan 2020
    Location
    Isle of Wight
    Posts
    5

    Re: Zenith Defy - 1970's

    Quote Originally Posted by hookey View Post
    Can’t help but that looks a really great example with the added bonus of family history. Complete with bracelet too. Your late father obviously had great taste.
    Thank you - my Dad was a very practical man and apparently asked the jeweller to recommend a decent watch that would withstand his lifestyle - cobbler, retained fireman, walker, sailor, fisherman - this was what was recommended.

  4. Remove Advertisements
    WatchUSeek.com
    Advertisements
     

  5. #4
    Member sempervivens's Avatar
    Join Date
    Sep 2006
    Posts
    4,393

    Re: Zenith Defy - 1970's

    Welcome to the forum. Congratulations on your Zenith Defy. The beautiful black or charcoal dial denotes it as a ref. A3645, which is one of the rarer models.

    The case numbers puts it in 1969, the first year of production of the extraordinary Zenith Defy.

    Could you also tell us the bracelet date? inside the clasp there should be a number like '1/69' (e.g. 1/69 indicates production of the bracelet in the first quarter of 1969).

    The movement of your watch is cal. 2552 PC, which was made only in 1969 and was the first Zenith calibre with ball-bearing rotor (a useful addition for the rugged Zenith Defy line).

    As for the manual, all you need to know (I think) is that the date can only be quickset by moving the hands back and forth between 19 pm and 24 pm.

    That's about the only disadvantage of the movement, which other than that is an excellent timekeeper of chronometre quality on a par with the El Primero.

    When you start wearing the watch you can also give it a little manual wind before tightening the screw-down crown, like any automatic watch, although it usually winds itself very well an may not even need that.
    Vanitas vanitatum et omnia vanitas, praeter ...

  6. #5
    Member
    Join Date
    Jan 2020
    Location
    Isle of Wight
    Posts
    5

    Re: Zenith Defy - 1970's

    Hello Sempervivens and thank you for the information - very interesting. The bracelet date is 3/69 - which I presume places it in the third quarter of 1969. Was their a reason why the 2552PC was only produced in 1969?

  7. #6
    Member sempervivens's Avatar
    Join Date
    Sep 2006
    Posts
    4,393

    Re: Zenith Defy - 1970's

    Thank you. Zenith updated the cal. 25xx series nearly every year with new improvements; in 1970 they introduced a higher frequency with the cal 2562 PC, which had 28800 bph instead of 21600 bph. A couple of years later 28800 bph became the new standard in the industry. There are also some other small differences e.g. in the construction of the date mechanism I've been told. But I've never noticed much difference in the performance of cal 2552 PC or 2562 PC, both are excellent timekeepers.
    Vanitas vanitatum et omnia vanitas, praeter ...

  8. #7
    Member
    Join Date
    Jan 2020
    Location
    Isle of Wight
    Posts
    5

    Re: Zenith Defy - 1970's

    My Dad's watch did not lead an easy life - he was very much an out of doors person and this watch spent the best part of 50 years on his wrist. Following the recent clean and service it does not appear to have missed a beat - testament to the craftsmanship and quality of the Zenith brand (and the attention of a very good local watch-smith). Thank you, Andy
    Sergei T. likes this.

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
    •