Repair of Omega Speedmaster Professional

Trying to find a reputable business to send in my 145.022-68 or 145.012-67 caliber 321 movement watch. This is becoming a difficult undertaking. My Complete bezel is missing and I have found some original's actually on ebay. But, the watch is working intermittently and is in need of maintenance and crystal replacement or polishing. Anyone have an suggestions where to send it? I am finding places not to send it as I want to maintain the value. Any help would be appreciated. I was impressed with a web search where I found, mailinwaatchrepair.com but, not sure about it yet. Thanks guys

Where are you located? If your watch is a calibre 321, then it can't be a reference 145.022-68 which has the 861 movement.
You want to send your watch to a watchmaker that specializes in vintage timepieces.

In the USA, here are a few and there are many others that other members will direct you to, hopefully, near where you live. Also in Europe there are a number of excellent watchmakers. Also, Archer, a member on this Forum is a watchmaker with a good reputation.

Links USA:
https://ridleywatchmakers.com/
http://www.lawatchworks.com/

Link UK:
http://www.simonfreesewatchmakers.com/

Omega Forum Member
https://omegaforums.net/members/archer.2441/