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All, I recently acquired a late 50's Girard-Perregaux Gyromatic with the "39" Jewel movement. My understanding is that this is the Girard-Perregaux caliber GP 22.09. Which (apparently) is a modified Peseux 336. I have never heard of Peseux - but I haven't been in to watches all that long (at least not at the level of detail where I would know these manufacturers). Can anyone tell me where I might find some info on this movement? I have had only modest success so far (just searching with Google). Many thanks! -Paul

Looking to the watch community for help with this (hopefully simple) repair - I recently bought a Girard-Perregaux 3719 dress watch however the crown was loose from the movement and comes completely out of the watch. The movement appears to be a Girard-Perregaux 101-274 (Peseux 7001): http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Girard-Perregaux_101. I think everything is in-tact, though I am not 100% certain as I'm not a professional watchmaker, though I have no reason to believe any parts are missing. I am wondering whether this may be something I can fix myself fairly easily, perhaps by simply tightening a screw, or if this is something that will require more work by a professional watchmaker. If this is a relatively easy fix what specifically should I do myself to fix the watch or, alternatively, what must I instruct a watchmaker to do for this watch? If this does require being taken-in to a shop, what will need to be done and what can I expect to pay or such a repair? As an aside, does anyone know what year this watch is from? What do the marks inside the caseback mean - I know these are service marks with dates but does this provide any additional information I can be made aware of as an amateur watch hobbyist? Finally, what is the approximate resale value of this watch if I can get it working again? Thanks in advance for your assistance!

Hello, This Girard-Perregaux watch (21 Jewel, calibre 03B) runs fine in dial up position, but will start to sputter and sometimes even stops as it is rotated to dial-down position. I looked closely at the hairspring balance shaft and noticed one of the ends looks eroded and short. I am hoping to replace the balance shaft with a new one which I have purchased from the Netherlands (vacheron seller on ebay). Now, what I am seeking in posting this is help with: 1) Confirmation of the need to replace the balance shaft judging from the pictures-- 2) Can I perform the balance shaft swap without a staking set and poising tool? P.S. I looked up some info, and I know I have to mark on the balance wheel before I remove the roller table and jewel Thanks very much in advance for any information. JC