Posts 15,307 Likes 45,003 Canuck ·Jun 3, 2025 S# 9064784 appears to be from the correct era. It certainly appears to be an Omega. By “authentic”, you mean?
Posts 1,329 Likes 3,686 Tire-comedon ·Jun 5, 2025 Looks legit, ref CK 785. Here in a 1933 catalog (your watch may be earlier than WW2) with non luminous daial & hands :