I have a Diver 300M Co‑Axial Master Chronometer 42 mm 210.22.42.20.01.002 (Steel / Sedna Gold on rubber) and would like to upgrade the buckle from stainless to Sedna. I don't think Omega officially offers a Sedna buckle for this model but does anyone know if there is a Sedna version that fits?

I found a listing for 'Gold pin buckle : O025NYZ012431' but I think this is 18k, not Sedna.

 

Try “NYZ012431 66 IJB”. I found that part number from https://omegaforums.net/threads/smp-300-rubber-strap-buckle.112484/

I have the same watch, made the switch and it feels like that’s what it should have come with.

 

Thank for the info and the photo, your watch looks great! Is NYZ012431 66 IJB the part number you ordered? Would you mind sharing approx what it cost?

 

Yup, that’s the P/N I used. The buckle was $630 USD from the OB.