• Apprentice
    14 Jan 2021, 5:52 p.m.

    Hi

    In another threadwe have
    reached a dead end..Pics in that thread if you are interested.

    I have a 8521 from 1956 with a 35 mm gold screw back case from 1957.
    Maybe a catalogue from around 1957 could help me? Can anyone help?

    Would be much appreciated

    Best Ole

  • Master
    6 Feb 2021, 7:17 p.m.

    The old catalogs do not show all variants of a Ref. (reference) number.

    Variations in the same reference can be the

    - Material (steel or 18 k gold)

    - Dial (shape pan pie /flat) and markers

    - With or without date (for automatic movements only) -> A or AD (Automatic
    or Automatic&Date)

    My first intention was, when I saw the picture: the crown is not original.

    The reference which was shown in the othe Thread is most probable a 18k Ref
    596 AD

    As ref 596 A(D) is indicated as as "extra-dicht" (~waterproof) and has a screw
    back, it should have a fish on the crown.

    regards
    Watch77

    Regard Ralph

    (P.S. I dont want to see the pictures or the infomation in an auction
    description)

  • Master
    6 Feb 2021, 8:15 p.m.

    Not sure the 596 was screwback Ralph...certainly a puzzle this one.

  • Master
    6 Feb 2021, 11:05 p.m.

    In 1957 the waterproof case was a new feature, and specially marked in the
    catalog only for few watches as the "Ingineur" wich had the same indication.

    In addition the ingenieur had the inner soft iron case which has nothing to do
    with tighthening the case.

    It was also a feature making the watch case a bit thicker due to the thread
    for the screwed back.

    Maybe others can find early references marke "extra-dicht" and check it thy
    have screwed backs.

    Ref 304; Ref 309; Ref 500; Ref. 580; Ref. 596; Ref. 599; Ref. 607; Ref. 648;
    Ref 709...

    In the 60's then probably Watches with a fish without screw back could have
    followed.

    regards

    Ralph

  • Master
    7 Feb 2021, 1:34 p.m.

    The puzzle could lye with the casemaker, at some point in time there must have
    been a transition from screwback to heavy snapback...schaffhausen have used
    different dial, different casebacks styles and different mvmnt types in the
    past whilst sticking to a ref...which would suggest the only thing left would
    be a case middle that denotes the ref.

    596 may well be the ref..the screwback caseback being by the by.

    Thanks for highlighting it ralph

  • Apprentice
    7 Feb 2021, 6:26 p.m.

    Thanks for your insight! Ive been wondering about the lacking fish crown..

    best

    ole