This is a reproduction DON "Dot Over Ninety" Bezel for the Omega Speedmaster, Professional and Straight-lug variants. 
If you are unsure whether this bezel will fit your Speedmaster, please contact me.

As shown in the pictures, this bezel can be mounted to the 145.022 Speedmaster case without issue. Since all Speedmaster bezels are interchangeable, this will be able to press on to the cases of all the manual wind 321 to 1861-onwards Speedies. 

It has the same glossy, anodized finish that a bezel from the 60s would exhibit if new. It also has the same serifs and font as an original bezel. The steel ring is made from 316L stainless steel, and the insert is anodized aluminum — identical to the originals in composition.

To reiterate, this is not a vintage bezel — it is a modern replacement

These bezels have become very rare, and I have personally known people who have lost a bezel or accidentally dented one upon knocking their watch against something. This reproduction is meant to be a solution for those who would not like to risk the damage/loss of their vintage bezels or those who simply aren't able to justify the 3000+ USD prices of a replacement.

Again, this has all the correct dimensions, measurements, and serifs of a vintage bezel except for some very slight alterations which have been made to ensure that this cannot be passed off as a vintage piece. 

 
 
To be clear, this listing is for a REPRODUCTION "DOT OVER NINETY" BEZEL. THE WATCH IS NOT INCLUDED.