I don't understand your question. i's just oubviously unworn. Immaculate dial and case. not even a hairline. A little variation from what is on the Omega website.
no idea that they had inscribed caseback on watches of that era
I haven't seen that caseback inscription style before on this watch and I question the engraving method as being from that era.
I hope I'm worried about nothing as it is quite attractive.
Do you have more photo's?