A real puzzle. We know the Omega Vintage Database is often wrong, but I have never known it
this wrong before.
According to the OVD
entry, the case reference 2583 should house a calibre 332 movement (30.10mm) and have a press-in back. Whereas your watch has a calibre 343 (28.10mm) and has a screw-in back. I would like to see a picture of the entire movement, not just a detail. On the movement, the 343 is the calibre identification, and 12628067 is the movement serial number, which dates it as already mentioned to 1951. Inside the case back, the various stamps indicate that it is solid 14k gold. 2583 is the case style reference number, and 10922405 is the case serial number. By this time, only solid gold cases were being given a serial number.
The crown has been replaced. The photo is not very well focussed, but I am fairly certain that the dial has been re-finished as well, which is a shame because this style with the Roman numerals is quite unusual for these 'bumper' automatics.
It's still a nice watch, and it would be worth getting a more appropriate crown and having the movement serviced. Thank you for posting
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