How much to purchase this omega bumper.

[speedb]

IMO this is something that you buy if you have a nicer model ready to put the black dial onto...

 

[chrisinohio]

I would wait for a better example. I highly doubt this watch has been serviced lately, and that's one of the most over-polished casebacks I've seen in ages. Additionally, the markers and hands have been scraped to death and the hands are wrong. I know black dials are desirable, but you're better off to move along and keep looking.