it looks like it was only worn a little and then put in a safe. I bought it with the intent to flip it, but now I'm having second thoughts... Before: After a really light case polish and crystal polish: No service marks on the inside of the caseback either.
That may be the best conditioned cal. 353/355 Omega I've ever seen, including Dennis' Grand Luxe. Don't let it go without a fight! Note the watch above has no "Seamaster" on the dial and the bowler hat crown. 100% correct for this watch. Take care, gatorcpa