Pre-owned Omega Seamaster Diver 300M: UK prices and what to check
The Seamaster Diver 300M has a wave-pattern dial and a helium valve, and is well known as James Bond's watch. Buying one pre-owned in the UK is safest through a marketplace with escrow and authentication; below are the references, what to check on this model, and where to look.
Updated 6 Nov 2026. Watches aren't investments; prices fall as well as rise.
New vs pre-owned
Goldsmiths, 6 Nov 2026: Seamaster Diver 300M Co-Axial Mens Watch
UK pre-owned price index coming soon.
References
| Ref | Made | Notes |
|---|---|---|
| 210.30.42.20.01.001 | 2018– | Black dial, calibre 8800 |
| 210.30.42.20.03.001 | 2018– | Blue dial, calibre 8800 |
Why people buy it
The Seamaster Diver 300M has a wave-pattern dial and a helium valve, and is well known as James Bond's watch. It offers a lot of watch for the money compared with other Swiss divers.
What to check on a pre-owned Seamaster
- Generation: the 2018 models have a laser-engraved wave dial; older ones have a different wave pattern and older movements. Check the reference.
- Bezel: one-way, with firm clicks. Check the ceramic insert isn't chipped.
- Helium valve: the crown at 10 o'clock should screw down fully.
- Bracelet: check stretch and that the clasp extension works.
- Water resistance: ask whether it has been pressure-tested since its last service.
- Papers: Omega warranty card or e-warranty, box and service history.
More on buying safely: our pre-owned guide.
Where to buy
Dealer links may earn us a commission; it never decides what we recommend.
Questions
How much is a pre-owned Omega Seamaster Diver 300M in the UK?
It depends on the reference, condition, and whether it has its box and papers. We're building a UK pre-owned price index from authenticated listings; until then, compare like-for-like listings on Chrono24 and eBay's Authenticity Guarantee.
Is it safe to buy a Omega Seamaster Diver 300M pre-owned?
It can be, if you buy from an authorised pre-owned programme, an established dealer, or a marketplace that holds your money in escrow and authenticates the watch. Check the serial against the papers, ask for service history, and never pay a stranger by bank transfer.
What should I check before buying a used Seamaster?
Generation: the 2018 models have a laser-engraved wave dial; older ones have a different wave pattern and older movements. Check the reference. Bezel: one-way, with firm clicks. Check the ceramic insert isn't chipped. Helium valve: the crown at 10 o'clock should screw down fully.
Does a pre-owned Omega Seamaster Diver 300M hold its value?
Some models have sold above their new price for long spells, but watches aren't investments: prices fall as well as rise. Buy one because you want to wear it.