This is an Omega Speedmaster Professional bought around 1970 when they first came out. I bought it myself and I have been the original and only owner of this watch. **I have worn it, mostly around the early 1970's quite a few times,  and then after that sporadically if I was going out** It is in excellent working condition and keeps good time. Chronometer functions work well. The external condition is excellent for its age  but internally as seen in the photos there is some moisture and water damage and this can clearly be best be assessed by you from the photographs of the internal aspect. I am including a couple of the original links that I have took of after buying it,  in case you want to resize it. Does have now faint JW inititials (mine) on the rear clasp which are almost invisible from afar. They are visible in 1 of the photos although the J is very faint.This ships ONLY to mainland U.S. and Hawaii/Alaska.* The watch should be bought with the understanding that its functionality is good, but it does have the internal moisture/water damage clearly shown in the photos *. *It was serviced by the initial shop that I bought it at to replace the glass since it was scratched and at that time I was told that it needed inside cleaning also, so it was sent out to Omega for that.* Thus it can be assumed that the water damage happened after the 'cleaning' which was done around late 70's or early 80's. It will be shipped priority with signature required.Ask ANY questions if needed.