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Help sourcing Cal. 10 1/2 N.S.I. hairspring for 1937 Zenith watch


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    • Apologies for being uncouth- I've not put in enough effort in the community lately due to a relocation, health issues, children schooling from home, and just the general "2020 malaise" but I've got another beauty in hand that I'd like to share. This is a Jardur Bezelmeter (model 960), probably from around 1945, which I picked up from eBay this week.  It cost a pretty penny too but it's a piece that's been on my wishlist for a long time and this particular one ticked all the boxes. The Bezelmeter has an interesting history- from what I have read it was marketed primarily to aviators and military personal during the 1940's and according to legend was commonly sold through military post exchanges. Collectors seem to believe that the watches often served active service members. Advertisements from the period make it clear they were marketed as tool for the adventurous professional. Introduced more than a decade before the Navitimer and Breguet Type 20, it was certainly a watch ahead of it's time. It's quite a large watch at 38mm and exhibits all of those traits we usually associate with a Pilot Watch- luminous hands, blackened dial, tachymetre scale, and of course the chronograph function.  Specialty features include the countdown bezel and 180 degree scale on the dial (useful to pilots executing a standard rate of turn). The movement is shock protected, the case is stainless steel and water resistant with a screw down caseback and cork seals; all fairly unusual features for a watch of this age. All the Bezelmeters I've seen house either a Valjoux 71 or 72 movement inside.  I prefer the former as the earlier Valjoux 71 Bezelmeters had slightly larger cases and sported the more elegant cathedral hands. The movement in my Bezelmeter needs a service (naturally) as it only runs for a few seconds. I can't wait to get to it but unfortunately I've already got a line of other watches to clear out first.  
    • welcome aboard! pretty new too. some cool people and lots of knowledge. enjoy.
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