A while back I came into possession of this vintage Omega Seamaster and I don't really know too much about it. Can anyone offer any insight? When it was made, background, model info, etc? Is it worth having it serviced? It seems to run well, but it looks like it's about 20 to 30 seconds fast per day. I don't think that's bad for a watch that's probably over 30 or 40 years old and has probably been neglected (as you can see by the pockmarks on the back cover).