Every vintage Omega in my collection has been seen by a watchmaker after acquisition except for two. This Genève . . .
[~'69 ref 137.001 cal 602]
. . . is one of them. My watchmaker ran it on his timing machine and proclaimed it to be running perfectly. Well, after six years, I figured it was time to get it serviced. Back on my wrist, running as impeccably as before.