zOwie Omega Discussion Forum

: Additional details added with the assistance of Wytnucls; some
: photos and text he provided is included below.

: 1906 18''' P Chro NN L 15-19 jewels (P:thin; 39x7.15mm; NN:time
: setting anti-clockwise allowed; L Lepine) It is the second Omega
: chronoscope, as it was called then, made by Francois Chevillat,
: after the calibre 19''' of 1898. It came in three versions of
: quality (A [7j] which was short-lived, B [15j], C [19j]) and was
: very popular until 1928, when it was replaced by the 39 Chro.
: The sub-dial totalizer could be either 15' or 30'. My example is
: a quality B, 15 jewel, accurate to a minute a day. It was
: conceived so that it could also be used in a wristwatch, without
: any modification to the pusher levers, as the chrono could also
: be activated through the crown. My watch "jumps" to
: the next minute on the minute counter, which really begins about
: 0:54 seconds and completes at 0:01 seconds.

: Lawrence of Arabia wore such a wristwatch, in 1916. Here is
: Lawrence's watch. Notice the pusher at 6 o'clock. In the
: chronograph case, Lepine and savonnette names are determined by
: the pusher position, rather than the small second subdial
: position. The calibre was conceived so that it could be used,
: either with the pusher through the crown or at a 90 degree
: offset position.

: See this article about the watch, now in the Omega Museum:

: http://www.watchnetwork.com/ClassiApp/C ... toryID=163 It cites
: a calibre 18''' SO PB CHRO Whereas my watch is a 18''' P Chro NN
: L 15-19 jewels At the time of the discovery of the Lawrence
: watch, I had little interest in pocket watch calibres and paid
: it little mind. Until Wytnucls pointed it out, I had no idea
: this watch was similar to Lawrence's.
: I do note that Lawrence's movement serial number is 4'428'513
: Whereas mine is 4'365'013 Making my watch (likely) somewhat
: older. The movement in Lawrence's watch was contained in a
: watch sold on 23 September 1915 (see the article for some
: discrepancies regarding the case, movement and markings).

: I will need to contact Omega to find out the shipment dates for my
: movement and case.

All of the above was just added to the original post . . .