Omega’s serial numbers run in sequence: higher means newer. No official Omega table is publicly available, so this tool estimates from widely published collector tables — and for Speedmasters it uses the Speedmaster-dedicated sequence, never the general chart (which misdates Speedmasters by a year or two). Treat the answer as a starting point — the serial dates the movement, and casing or final assembly could lag by a year or more.
Digits only — strip spaces and dashes. Modern pieces: laser-etched on the caseback or a lug. Vintage: engraved on the movement itself, which means having a watchmaker open the case.
Where to find your serial
On modern Omegas the serial is laser-etched in tiny digits — usually on the caseback or the 7 o’clock lug — and you’ll want a loupe to read it. On vintage pieces it lives on the movement: a bridge or plate engraving visible only with the caseback off. If the watch has to be opened, let a professional do it; a slipped case knife costs more than a service quote.
Reading the result honestly
- It’s an estimate. Expect ±1–2 years of blur, worse at the edges of any range. Published tables disagree with each other in places, and Omega’s own records are the only authority.
- The serial dates the movement, not the watch. Movements could sit in stock before casing, so a watch can be younger than its serial suggests.
- Speedmasters kept their own books. From 1957 into the mid-1970s, Speedmaster serials ran in separate blocks from the main Omega sequence — a 1969 Speedmaster reads in the 27-million block, where the general Omega chart would call it 1968. The tool uses the Speedmaster sequence for Speedmaster-era serials.
- 1968–69 is a blur. The last calibre 321 (ST 145.012) ran into the 27-million block while the transitional calibre 861 (ST 145.022-68) started mid-26-million — serial alone can’t tell them apart. Cross-check the reference and movement.
- Recent watches may be undatable. From around 2019 Omega moved to randomized serials, which can’t be dated by number at all.
- For certainty, ask Omega — when the service returns. The Extract from the Archives was the only document that settled a birth year against Omega’s production records — but the service has been suspended since 2023 with no announced return. Until it comes back: what the extract was, and what to do without it.
About these tables
Serial ranges here are compiled from widely published collector references — the same charts dealers and forums have circulated for years — and are reproduced as estimates, not as Omega documentation. No official Omega serial table is publicly available, and Omega SA is not affiliated with this site. If you spot a range that conflicts with a documented watch, tell me — corrections from the community make the tool sharper.