Vintage ladies watch identification circa 1971

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Hello, I’m trying to identify this watch-can anyone help point me in the right direction? TY

750 is under omega clasp:
711.1678
 
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Welcome to the forum.
It says on the dial. It’s an Omega De Ville. And you have a year and a reference number. There isn’t much else to learn, what did you have in mind?

750 on the clasp means 18karat gold.
Finally and depending on the size, it could be a man’s watch. Those were the days.