The watch has had a life. The dial misses original lume, but looks good from the pictures, bezel, hands, pushers and crown were (most likely) replaced, the 1171 bracelet doesn't belong to this watch, it is a later replacement.
Movement looks clean and the serial number is fine (referring to your question, OMEGA produced this reference even in 1967).
If there's no corrosion on the gasket rim (as
@watchyouwant mentioned), well, then for 6k, I'd take it for sure...
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