This is a ref 2891 from the mid 1950’s. Watch has a larger size case for the era at 36mm. It houses the manual wind cal 267 movement, which is based on the legendary cal 30T2 movements. When I got this watch the dial was ruined beyond repair. I had it redialed in black and the results are quite striking, in my opinion. The watch was gifted, shortly after having it serviced, to a family member.