Tools
CloseWhat year is my Zenith?
Pick the brand. Type the number. We’ll tell you when it was most likely made.
Zenith’s serials don’t date. The calibre does.
How well the number tells the year
Not from the numberNot from the serial. The model and calibre give us the era.
Where to look
- The reference, like 03.2040.400, is on the case back.
- Many movements carry no serial at all.
Ask the maker
To the best of our knowledge, Zenith offers an Extract from the Archives.
Questions
Where is the serial number on Zenith watches?
The reference, like 03.2040.400, is on the case back. Many movements carry no serial at all.
Can the serial number tell me when my Zenith was made?
Not from the serial. The model and calibre give us the era. Zenith’s serials don’t date. The calibre does.
Does Zenith keep official records of its watches?
To the best of our knowledge, Zenith offers an Extract from the Archives.
Does a matching serial number prove my Zenith is genuine?
No. Real serial numbers are copied onto fakes, so a number that looks right proves nothing on its own. This lookup only estimates when a watch was made. For a proper opinion on authenticity, have the watch inspected with the case back open.
Every answer here is approximate and given to the best of our knowledge, from charts published by dealers and collectors. Watchmakers rarely publish their own.
A correct number doesn’t prove a watch is genuine. For a proper opinion on your watch, bring it in for an inspection, or read how to tell if a watch is genuine.
What you type stays on your device. Nothing is sent to us or anyone else. Please don’t post your full serial number online.
Last checked against the published charts on 5 November 2026.