I finally took my recently acquired 1977 Iraq AF Chronomat (ref 1806) to a watchmaker and had it opened. It's all real with the proper Cal 12 movement. He said however, it needs to be serviced, and he wouldn't even think about doing it. The question is what are my options here? What will service cost through an AD? I noticed a place in Houston advertised on ebay that claims to do the service as prescribed by Breitling. Has anybody had experience with them or other servicers? Any advice is welcome.