Looks perfectly fine to me.
Symbol and fonts are correct for the period (mid 1960s).
Caliber 711 is correct for this model. Check to see if there is rotor wear on the rotor and caseback, if there is you can get it corrected when you get it serviced (which would be a wise move).
The solid gold case was made for Omega by Artisanor S.A. of Carouge, Geneva.
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