Isn't this the wrong crown?
And now for something completely different....
Robert B. Ingersoll "Midget" wrist watch produced for WWI. 1918 serial number with a period strap. Pin-lever escapement has been recently serviced, the lume has been replaced (this paint job is actually better than the original) and keeps time. Yes, I wear it. Yes, I wear it on original leather straps. This leather is about as thick as two sheets of paper, but I have confidence that it is sturdy enough. I have a small collection of grills made for and fitting on this watch, which I occasionally wear as well.
Absolutely fascinating that these watches can still run and keep time.
Tom
case size? looks overly large for a WW1 era watch...but looks good! 👍
It's a lady's pocket watch with a wrist case. 6 size in American gauge, about 42mm in diameter at the case.
You're right, watches this size are rare, but Ingersoll made a crapload of them, and there are adapters (of which I have a few) to put one of the pocket watches on your wrist.
Elgin, about the time of WWI, but not necessarily for the war, cased a 6 size movement in a wrist case. Very rare, very expensive when you find them!
Tom