WW2 era

Posts
15,709
Likes
47,007
S# 9064784 appears to be from the correct era. It certainly appears to be an Omega. By “authentic”, you mean?
 
Posts
1,346
Likes
3,731
Looks legit, ref CK 785.
Here in a 1933 catalog (your watch may be earlier than WW2) with non luminous daial & hands :