Looks like a lemania 1340. The same movement was used in the omega 1040. Looks to be in great condition.
Correct, it's a cal 1341. Pretty unusal, as all Lemania branded watches compared to those that were branded by Omega. I sold one not long ago, and got a little less than 800 USD if I remember it correctly. Yours look like it as been polished pretty heavily, and that kills the interest, for me at least