![]() Sorry, no pic available - the watch is with someone who will fix it for me if I can find the needed parts, whcih I can't do until I can determine how to identify the proper watch to get them from. (Curiously, I notice the caliber number matches the diameter in mm - 38.1 mm to 381 caliber number.) Serial number: 2-339980 Switzerland Cororuma case 'Cased and Timed in USA by Gruen Watch Co.' 8213952 10-k-Gold Filled That's all the information on it. ![]() ![]() There is no second 3-digit number, which apparently would have been for style number - a deficiency which apparently is common for the Veri-Thin and for Gruen watches made in Switzerland. That is the only number under the balance. 15 jewels 38.3 mm (1.5078 inches) diameter movement (size 10, 17 lignes) caliber number: 381. And, is there any way to identify the same watch to get for parts - other than the caliber number (can't get people on eBay to take the balance out to look for the caliber number!)? I have a Gruen Veri-Thin. ![]() I find it can be very difficult to date a Gruen pocket watch. Since the emergence of the internet and even before the ever growing number of Gruen lovers started researching and collecting material and up to today we.below you will find '30' Img For 'Gruen Watches Serial Numbers' from our. Ceased operations nearly all information concerning serial numbers, watch types etc.
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