Hello - I have a Waltham 6/0 '42 movement which I recently purchased. The movement is a center second sweep which I figured would be an A-11 movement - a 10616 - but upon inspection turned out to have 17 jewels and no hacking function. The serial number appears to date to the 1940s - it begins with 31415...
Anyone have any insight on this? I'm assuming because of the 17th jewel it is a 10617 - but I'm confused because the ones I've come across doing some research appear to have a second hand in the bottom of the face and appear to be made in the 1950s.
Also - if it is a 10617 movement from the 1940s - does anyone have any insight or links for details of this movement? Was it a war time production as I figured? I have searched but not found much on its history - I'd appreciate any insight available!