![]() You must give the letter prefix of the serial number, if there is one. For more information see the Watch Serial Number web page. Lists from many pocket watch manufacturers, even those no longer existing, are published online. Many watch repairpersons keep pocket watch data to order parts. The caliber of movement could be used over several years or even decades. For example, a Waltham pocket watch with serial numbers between 29,100,000 and 29,399,000 was manufactured in 1936. When looking for the number on your watch you should be looking at the serial number on the movement, not the case. Waltham Pocket Watch Serial Numbers Use this table to look up your Waltham Pocket Watch serial number of and hence the year of manufacture. ![]() Based on the super-reliable 992B with Elinvar hairspring and mono-metallic balance, the Mod 23 adds a chronograph mechanism, making it one of the most complicated watches produced by Hamilton. Hamilton Model 23 Military Chronograph was widely used during WWII as a navigator's 'stop-watch'. › ▄ ▄ Ball Pocket Watch Serial Number Database ▄ ▄
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