Martin adds to our Valjoux 72 knowledge

From: Martin Vogt <m-b.vogt@xxxxxxx.de> Date: January 17, 2006 5:52:02 AM CST To: <Chuck Maddox> Subject: Info on the Valjoux 72 5 Hi Chuck, it's always a pleasure to read your watch blog. I wish I could find the time/material to post more frequently. Hopefully I will and things will pick up. You asked for further information on the Val. 72 theme and I checked my good old Chronograph 'bible' , the Lang-Meis, Chronographen, Armbanduhren: Die Zeit zum Anhalten  (transl. : Chronographs, Wristwatches: The Time to Stop) published by Callwey, 1992, (not continued!) unfortunately only available in german. (One of the authors is Mr. Gerd R. Lang, owner of Chronoswiss, a master-watchmaker, watch-maniac and a chrono specialist .  Searching the model-tableaus I found a remark on the Valjoux 725 :  12-hour counter and flyback device.....  But no photo or further description....  Wow, well that makes sense! Thanks for the info/insight! This is the only information on this movement I ever noticed since collecting chronographs. Neither other books nor the internet brought additional information. Maybe this was a Valjoux project only which was not continued??? That's a possibility... Or it could be some firm incorporated the movement into a product without making a splash about it. Best regards from Germany Martin  PS: According to the named book, the Val. 71 has 14''' only.  Anyone told me that the Val.71 should have been the predecessor of the Val.72. The corresponding two-subdial version to the Val. 71 is the Val. 22 (also 14''') with its successor Val.23 Good information to know! Thanks Martin! Here is an updated table: Valjoux 72 Family of Chronograph Movements: Movement #: Description: 71 Large 15 Ligne version of Valjoux 72 (13 Ligne or just under) 72 Basic ‘Plain Jane’ Valjoux 72. 721 "Seafarer" Tides complication in 9 o'clock sub-dial... 722 Rolex variant with Breguet Overcoil & MicroStella Balance 72c/723 Tri-Date non-moonphase v.72 724 GMT complication 725 Fly-back complication, not certain it was ever produced in quantity 726 Improved v.72 movement. 727 Rolex version of 726 with Bruget Overcoil & MicroStella* 728 1 Register/Center Pinion Chrono Minute hand varitant. 729 GMT, probably v.726 with GMT complicaton added. 730 Another Triple-Date model, perhaps DDM v.726? 88 Triple-Date Moonphase model (v.723/72c with Moonphase) * Note: The posting of Kohei's scan of the GP is something that throws a monkey wrench into my theory of the v.727 being a Rolex Exclusive movement, I think there is more to this movement than I know at this time. Thank you Martin for increasing our knowledge! -- Chuck