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UG Cal 138SS And 139 - Any Difference?

  1. hejsam Sep 6, 2022

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    Can anyone shed some light on the difference between the cal 138ss and the 139?
    And are parts interchangeable between the movements?

    (pictures stolen from the web)
    ore-del-mondo-2.jpeg s-l1600.jpg

    My reason to the question more than just the curiosity of learning is that I'm searching for a missing part to my 138ss movement and with the cal 139 (and maybe even the cal 138 and 138C?) it will broaden my search area.
     
  2. bgrisso Sep 6, 2022

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    hejsam likes this.
  3. Mazoue Sep 7, 2022

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    hejsam likes this.
  4. Mark020 not the sharpest pencil in the ΩF drawer Sep 7, 2022

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    If Mr Ranfft says this I know enough :D

    upload_2022-9-7_11-4-25.png
     
  5. Mazoue Sep 7, 2022

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    I recall you were looking for part 1494/1 and this document indicates that part is actually different for the Cal 138ss and the other Cal 138 variations. In the absence of any other information, I would not assume that the Cal 139 part is identical.
     
  6. hejsam Sep 7, 2022

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  7. hejsam Sep 7, 2022

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    That is correct, I recall looking at that sheet before but never notice the difference between them:
    Skärmavbild 2022-09-07 kl. 22.20.29.png
    But as they are stated as separate parts even though they have the same name you might be right that they are not interchangeable, damnit just as I felt some luck the search starting to look darker again.