Quote Originally Posted by Havenot View Post
At the Colt forums there is a long running topic where you can post your military number and get a month and year of manufacture or acceptance for the Colt 1917 revolvers
That is where the best information is available, for sure. Here is a link to the epic topic. Member, Haggis, has unfortunately passed away. But you will likely find a serial number which is "close enough", and you will be able to accurately date your pistol.

https://www.coltforum.com/threads/co...numbers.34787/
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