Hello, Please find below some photos of an Omega watch I am considering to buy. Any thoughts on authentication? Thank you.
Looks real to me. What has your research found? You know it's a very small watch, don't you? About 33mm.
The caliber 625 was used in lady's watches and some smaller man's watches. The serial number of 39 million tells us the movement was manufactured sometime around 1975 or 1976. The reference number of 511.417 confirms it's a lady's watch - the 5 is the tell.