Old pocket watch

New to the forum and new to Omega and, although I have a reasonable collection of modern watches, I'm also new to vintage. I found the forum searching for information on a watch I recently bought at auction and having now spent some time here reading various threads I reckon I'll hang around.

I recently bought an auction lot that included a watch described as a '1916 military pocket watch'. It's in suspiciously good condition considering its age and I can't find another example with the same dial / hand design combination on the net that is older than the early 40s - and that was a wrist watch. The lume on the hands still holds some charge after exposure to light, but only for a few seconds and is still green whereas what I'm assuming to be lume on the numerals is an aged brown. The movement and case numbers suggest that it dates from the early 20s. Could it be a collection of parts? It's remarkably accurate gaining 10 seconds a day sitting flat on the desk. I paid a minimal amount for the lot that included WW1 service medals so the watch doesn't owe me anything.

Any comments would be appreciated.

Since you are new to vintage, know that the numbers will be painted with radium, do not unscrew the crystal and play around with that side of the watch

It’s a nice looking piece. Can u see the serial #? Watches of this age sometimes have the serial under the dial, and a watchmaker would need to get at that for you

Edit, I see the serial I think, but it’s too fuzzy to read.

It's interesting that the lume in the hands would be replaced and the radium paint on the numerals left intact.

Movement no. 5977123
Case no. 6746797

Case serial dates to around 1920, as does the movement serial.
All looks nice and original except for the crown (although its shape/style is correct) and the lume on the hands which is easily rectified.

That's a beautiful watch Jim. Same hands, but different dial and has 'Swiss Made' on the dial whereas my watch doesn't mention being Swiss anywhere. Is the difference just a product of the time that they were produced?

I wondered about what looks like a brass crown on a stainless case.

Yours probably pre-dates the one I showed by 20 years and the regular "Swiss Made" didn't become widespread until the late 1940s or so. Prior to that Omega used may variations to indicate the origin, mainly Swiss Made, Swiss, Fab Suisse etc, and as in your example, nothing at all.

Your watch is definitley Swiss, the movement is correctly marked and the case bears the contemporary Omega "Belt/Garter" symbol.
The crown may have been replaced by a gold plated one at some stage, I would have expected it to more closely match the case.