OK, I´ll start.
Firstly it is not a chronograph, a chronograph in layman's language is a stopwatch and this certainly isn´t. I think it is a 1970´s manual wind movement, probably a small one at that judging from the back case size. Possibly from the 6** series.
Secondly the dial strikes me as odd for a couple of reasons.
To start with `OM Swiss Made OM` is actually saying `This dial is solid gold` and this one clearly isn´t. To me it looks like a redial.
The bracelet is not produced by Omega judging from the lack of any Omega hallmarks
I´m guessing the watch is approx 32mm diameter, if so this is quite small by todays standards.
Regarding valuation I would say the 7K is way out. Unfortunately I have to say that this watch is neither classic nor contemporary enough in its styling, suffers from a redial and has a non Omega bracelet. For those reasons the value is mainly in the gold weight plus the value of the movement, which in this case will probably be an additional 50-100 euros or so on top of the scrap value.
Not so pleasant to hear I´m sure, but you did ask
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