Hi,
This is my rare Zenith/Universal Geneve/Martel Chrono ref. 22507. Serial number 762986.
Cal. 156H
Diameter 37,3mm
Bauhaus type dial with stick-style blued steel hands.
Original crown and pushers.
Would be nice to get your comments!

 

Super cool and rare. Got any wristshots?

 

Very intriguing.
What year is it from?
The crown has some logo on it or is it plain?

 

Nice and rare! Basically a Universal Geneve in disguise. Dating per the UG chart so around 1940. Close sibling here: https://www.watchuseek.com/threads/zenith-i-cant-find-a-watch-like-this-one-fake.5404849/

 

Very attractive watch.

 

Thanks!

 

Year is ca. 1940
Plain crown.