Help with identification

[horm13]

Hi everyone! It seems there are a lot of experts on Omega watches so I would love to ask you for help with identifying the Omega watches my great-grandfather was wearing.

Based on the movement serial number and tables accessible on the internet, they should be from 1923-1930. The movement cover does not seem original. Watches have the windup machine system.

Thank you all in advance. Already checked a bunch of websites but unsuccessfully, unfortunately.

Thank you once again!

MH

 

[Foo2rama]

🍿

 

[JimJupiter]

Interesting "self-build" wanna be chrono? I cant see pushers and I cant see a chronomodul on the movement. So are the subdials just painted on without function?