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Let's see some Eterna cal 852 manual wind watches

  1. minutenrohr Dec 28, 2021

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    I thought I could suggest a small but nice thread showing Eterna cal. 852 watches. The occasion is the completion of a repair of one of my current favorites, a 36.5 mm steel watch with the 852S - still without shock protection. The balance staff was broken, as well as the bearing jewel under the balance. In addition, the mainspring was weak. Now everything is like new and I am very happy.

    Best regards - HU

    IMG_9299.JPG IMG_9301.JPG IMG_9302.JPG IMG_9303.JPG IMG_9305.JPG IMG_9306.JPG IMG_9307.JPG IMG_9308.JPG
     
    __ryan__, Zapatta, bubba48 and 6 others like this.
  2. Tony C. Ωf Jury member Dec 28, 2021

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    A beauty, HU!

    Congratulations, and all the best for the New Year.
     
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  3. DirtyDozen12 Thanks, mystery donor! Dec 28, 2021

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    It really is like new. Great photos of a beautiful example.
     
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  4. size11s Can’t bat, can’t bowl Dec 28, 2021

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    Fabulous watch, congratulations. I thought that the screwed in element seen under the regulator arm was part of some kind of shock protection on these great movements. No?
     
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  5. minutenrohr Dec 28, 2021

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    Correct. I should have written that the watch has an "early" shock protection. My point was to distinguish between the "early" shock protection (which I can't really imagine springing the baring jewels in such a way that the balance staff is halfway secured - especially since a really large balance is mounted) and the later shock protection concepts, where you can recognize from above that a spring is active.

    Thanks Tony and of course the same for you!

    Thanks also to DD12 who helped me a lot with this watch!
     
    size11s and DirtyDozen12 like this.
  6. minutenrohr Dec 29, 2021

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    After a restless night with dreams of baring jewels, feathers and staffs, I spoke with my watchmaker on the phone. On my question whether he finds that the watch has a shock protection, he answered spontaneously with "No". On my objection that it must be a "kind" of shock protection (or intended as such) he said that then the steel plate on the balance cock (with the two screws) should be much thinner or softer - e.g. made of brass. But it looked as if someone had thought that construction at least in the direction of shock protection...
     
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  7. minutenrohr Dec 29, 2021

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    Here´s my other 852S (better shock protection...)

    IMG_8676.jpg IMG_8673.jpg
     
    DirtyDozen12 likes this.
  8. Tony C. Ωf Jury member Dec 29, 2021

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    size11s and minutenrohr like this.
  9. DirtyDozen12 Thanks, mystery donor! Dec 29, 2021

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    Interesting information about the stiffness of the steel plate, thank you.
     
    minutenrohr likes this.
  10. minutenrohr Mon. 1:51am

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    Tony C. and size11s like this.
  11. minutenrohr Mon. 5:41am

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    P.S.:
    On the main plate of the watch shown at the top, there`s a "L" in addition to "852S". I had not noticed that before.