It is pretty. If you bought it under the terms of it being completely original and paid a premium for it, then you need to contact the seller and request a refund. If you got it for a good price and are happy with it, then enjoy.
I am with the previous replies- it is a genuine Omega, but has a refinished dial. The case refinishing is something that is the preference of the current owner- to "polish" or more accurately Refinish the case is something collectors frown on, but owners truly enjoy.
Nice watch- make sure you keep it serviced regularly (every 5 years). Omega has recently begun limiting the supply of reversing wheels for these models (550-565 caliber family of automatics), but they actually restarted parts production for them 10-15 years ago due to demand.
Nice watch!
Enjoy
Ari
You just need to make sure you have the correct endlinks which I think was the 512.
https://omegaforums.net/threads/omega-bor-8220-ss-bracelet-with-11-end-links.95949/
Check with @No Mercy to see if this is the correct bracelet and has the right amount of links for you. The 11/12/511/512 were basically all the same shaped endlinks and are interchangeable as far as I know.
If The above is still available, and correct- don’t hesitate. The price is right and it’s from a known seller here with good rep. You won’t get better on eBay.
The BOR was common on the 166.010, I believe there are a couple on the forum now. That particular model dates to the late 60’s and even though the 5 row BOR is more commonly associated with the late 50’s early 60’s and the 7 row was for the Deville’s of the same era, that one took a 5 row. You just need to make sure you have the correct endlinks which I think was the 512. Perhaps @Lucasssssss can chime in with the exact bracelet combo that works on this shape case.
@tomvox1 might have some insight as I believe he had a similar model for sale last year.