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14393/14381 model has a screw-down caseback. This watch is more like a 2943, cal 504.
I see that thx. And here is a good thread on 2943
https://omegaforums.net/threads/another-turler-omega-constellation-calendar-ref-2943-in-my-collection.163512/
Thread 'Another “TURLER” omega constellation calendar (ref.2943) in my collection' ·Hello all members
Omega first produced the constellation reference with the date feature which is the model “constellation calendar” in 1957.
Only 25,000 has been produced in the steel (ref...qazwsx1 ·
Ah. I did read that thread. I saw a lot of similarities, but wasn't sure. Is the only real easy of knowing it's date or number to open the back?
Yep, the info is there to read. Ask your watchmaker to address possible rotor rub during next service. No polishing.