Hello dear watch community
I finally found my first vintage tank watch today. But now I have a problem to determine the age, the movement is a Zentra 04 which was apparently built from 1928-1945. All other Zentra movements only say "Zentra 4" and not "Zentra 04" and I'm a bit confused. The manufacturer of the watch is also a mystery to me. Roman numerals are carved into the case and lid, which may have a meaning.
I hope someone can help me with the year of manufacture.
Thank you and have a great start in 2023
•📍𝙶𝚎𝚛𝚖𝚊𝚗𝚢 • 🗣𝙶𝚎𝚛/𝚁𝚞𝚜/𝙴𝚗𝚐 • ⌚ ᴡᴀᴛᴄʜ ᴄᴏʟʟᴇᴄᴛᴏʀ I'm a relatively new watch collector, in 2020 I found my way into watches. The watches from the 70s captured my heart the most.