• 29 Apr 2020, 5:21 p.m.

    As some of you know, I am collecting pocketwatches, IWC only.

    Far from saying that my collection is a museum collection but I am proud to
    have found some nice and rare pieces over time.

    Some of the pocketwatches are common, easy to find on the market, sometimes in
    better condition than mine, but some I have are gems.

    So in these crazy times, as the museum in Schaffhausen is closed, why not open
    one here on the forum.

    As long as the museum is closed, I will post here daily a pocketwatch from my
    collection.

    I hope I don't run out of pieces before the virus is beaten. Fingers crossed
    for all of us.

    I will post them in a random order, with some comments, feel free to join.

    Keep safe all.

    DAY 39, cal 52 with "snail" regulator

    Yesterday I wrote :"It is not surprising that a collector has more than one
    cal 52 in a
    collection, it was for years the workhorse in the IWC pocketwatches."

    And yes, another cal 52 today, but with a special feature, with the
    "snail"regulator.

    As you can see on the pictures, a watch can be regulated with different
    systems, In the post, I have a picture with 3 cal 52's with 3 different ways
    to regulate, The regular one, the one with the swan neck and the snail
    regulator. All three can be found on cal 52's.

    But the snail regulator, you find this type of fine adjustments only on H 6,5
    watches.

    In the books, these watches are marked as : "reglage speciale", indicating
    that this particular watch had extra attention for its fine-adjustment.

    You can see that the swann-neck adjustment is not done by the frequently seen
    screw but by a kind of disc of which the screw can be turned by a
    perpendicular placed screwdriver, eliminating the risk of slipping-off.

    As the snail-shaped cam is rotated it moves the tail of the regulator.

    According to forum member Ralph Ehrismann, 2000 to 5000 watches should have
    been made
    with this type of regulator.

    It is strange that not more are found in the market, you can find these but in
    my opinion not that frequently.

    So why buying different cal 52's ? They all can have something special to
    offer.

    Mine here, besides the snail regulator, has also a very nice Niello silver
    case, with a gold medaillon, the dial is not a signed one and hands are Louis
    XV style. The watch can be dated around 1905.

    The three different styles compared

    Still no clue
    what these markings HK are...

  • Master
    29 Apr 2020, 5:48 p.m.

    This post dedicated to Jeroen - a good friend and watchmaker
    extraordinary.

    I, like Tonny believe that it is these suttle differences in particular
    versions of a Calibre that make collecting more than say just a single pocket
    watch of each calibre type. And yes, the different kind of cases, gold,
    silver, niello, staybrite steel ( more of that in a later post) or nickel, are
    a direct stark diferentiator - but often it is something smaller (the inner
    beauty of a snail regulator) or even a different set of hands.

    The Watch

    The pocket watch I wish to share today with you in order to compliment Tonny's
    trully handsome niello cased C.52 snail regulation, first caught my attention,
    not becuase of the snail regulation, but rather becuase of the very different
    and intricate hands overlaying what is otherwise a very non-descript dial,
    which like that of Tonny's dial is not signed.

    And as Tonny writes apparently they made a couple of thousand of these Ca. 52
    based snail regulated timepieces.

    Having said that when researching the archives in Schaffhausen there is no
    mention regarding this watch of "reglage speciale" and actually quiet the
    opposite, the watch is actually listed in the sales records as it having
    being sold as "normal" Cal. 52 (Mod. 1904).

    So, while no mention is made of the particular type of regulation
    (snail) it seems that the note in the ledgers "Mod. 1904" could have been
    refering to the modification of the regulation mechanism. Hopefully, out
    experts can provide some more insights to this.

    Here also, the case back carries a medailion in the center for engraving -
    yet remains in it's original state.

    Another interesting observation for this particular C.52 Snail regulation
    movement can be seen below on the regulator mechanisim itself where typically
    we expect to see either french or english abreviations for the slow / fast
    adjustment indicators - on this watch rather uncommon in my collection then
    the german words:

    VOR (in front - to advance) and NACH

    (serial number removed to protect the innocent)

    This was is living up to it's movement name sake and has been crawling through
    it's restoration at snails pace. When fully services and finely regulated it
    my watchmaker assures me it will run like clockwork !

    A special note of thanks here too, to our man Martin in Prague who rushed out
    the office, hit the ATM's to secure cash and then made the trip to downtown
    Prague to secure this piece for me, with some tough negotations tactics!

  • Master
    29 Apr 2020, 8:29 p.m.

    It is unknown to me which of the different regulating systems came out as the
    best, the easiest to make, the most reliable etc.

    But the swan neck regulator is most seen in the highest quality movements and
    was also selected for the expensive complicated watches of the 'revival
    period' ( 1970-1990). This is ref.5404.

    Adrian,

    (alwaysiwc).

  • Master
    30 Apr 2020, 11:57 a.m.

    A regulator
    type that you have never seen is depicted in this calibre 52.

    The image was sent to me by Thomas Koenig years ago. It is also present in the
    reference book of Toelke and King. The letters are in French A (avant), R
    (retard). It came never into production. I guess it is a prototype watch.

    Regards,

    Adrian,

    (alwaysiwc)

  • Master
    30 Apr 2020, 12:11 p.m.

    Now I suddently have the need to find such a movement !

    Thanks for sharing Adrian.

  • Graduate
    30 Apr 2020, 12:26 p.m.

    @ Adrian: It's well possible that this was a prototype watch.

    At least there was a patent filed in 1910 that describes this regulating
    system. If you type in "CH53993" in the search box on
    worldwide.espacenet.com you will find it.

  • Master
    30 Apr 2020, 1:14 p.m.

    Lyles many
    thanks for sharing that link.

    One wonders why after having gone through all the effort and cost to patent
    this form of regulation it never went into mass production?

  • Connoisseur
    30 Apr 2020, 1:58 p.m.

    Dear all, ยด

    we shouldn't mix up "reglage de prec." or in long "reglage de precision" and
    "reg. spec." or in long "reglage speciale".

    Watches "reglage de prec." were regulated to chronometer standards, though in
    most cases not officially rated. The term was used for the first time at about
    1894, then soon enhanced to "Qualite Extra - Regl. de prec" and after about
    1904 abridged to "Qualite Extra". "regl. de prec" is noted in the ledgers as
    the buyer had to pay a premium compared to normal watches.

    "Regl spec" are watches from the movement No. range 793.xxx, named in the that
    way in Toekle/King movement No. register. However, in the ledgers the entry is
    "Fabrication etrangere", i.e. movements manufactured by third parties. These
    were ultra plate dress pocket watches and the shop window chronometers.

    The snail regulator is not related to "regl. de prec" nor to "regl. spec.".
    You find it on Cal. 52 and 53 H 6.5 which as intermediate between the old H 7
    calibres and the younger H 6 calibres were produced for a short period of
    time, introduced in 1904. So what you, Tonny, presented is a not that often
    seen movement H 6.5 from 1904, no "regl. spec." from 1923 subseq. nor a
    "Qualite Extra Reglage de prec".

    Regards

    Th. Koenig

  • Master
    30 Apr 2020, 6:14 p.m.

    Thomas, many thanks for this very (read: VERY) informative post. Once again.
    we all learn here.

    You write quote : "These
    were ultra plate dress pocket watches and the shop window chronometers."

    Now, om aware of those window chronometers - but what are these dress
    pocketcwatches? ... and which movements/ manufacturers provided them?

  • Master
    30 Apr 2020, 6:25 p.m.

    A photo of the Swiss Patent drawing "Fine" adjustment mechanism, Taken from
    Tolke & King

    Image kindly
    rotated by Forum Software

  • Connoisseur
    30 Apr 2020, 10:22 p.m.

    Hi Mark

    The IWC reglage speciale ultra plate dress watches are 3 mm in height, so
    about half of what was standard with IWC pocket watches up to then. There is
    not only one version; the regl. spec. dress watches differ a little bit from
    movement to movement. But obviously they all are variants of the Jaeger
    LeCoultre calibre 15/12 ultra plate, which JLC sold to many well-known brands
    as raw movement. Please find one enclosed taken from on old auction catalogue

    Furthermore I may add another fine regulation device, which is rare, but
    slightly more often seen than the prototype (which obviously was too costy to
    produce).

    Regards

    Thomas