Omega Speedmaster Professional 145.022 reference cal. 861 3.21 serial number period correct for straight writing caseback Service marks from the 80s but no recent service history. The case has been previously polished. Hands are service replacements. Very good condition tritium step dial with no patina. Markers are still phosphorous - I have consulted with a few knowledgeable people on OF and the consensus is that the markers have not been repainted. Correct DNN bezel starting to fade. Caseback stamped 145.022-69 inside. Watch comes on vintage leather strap. No box or other accessories. Watch winds smoothly, runs, chrono runs and resets a fraction to the right of zero. Hand movement is a bit more loose than I have previously encountered when setting (for full disclosure). My asking price is US$4,650 including international shipping. Paypal by invoice is accepted +3.7% The watch is located in Sydney, Australia. Full refund if watch is not genuine or as described. Many local and some international references available. Some of you may know me from Instagram as @sydney_watch_guy