I sold one of those, a 9k gold 131.25016 on here a few months ago. Yours is close in serial number to mine and also hallmarked for 1969 as mine was though has the stick indices dial, mine has Arabic numbers. With any vintage watch purchase you also need to consider the servicing cost which can add a further £150-250 to your outlay. If there is no proof of a recent service then there was no service. You probably did ok but it wasn’t a give away price if as is likely it hasn’t been serviced in a while.
https://omegaforums.net/threads/1969-omega-geneve-9k-gold-131-25016-–-serviced-unpolished.78148/Click to expand...