0.750, 18K gold case.
Case reference 7150? No hits on the OVDB
Unfortunately, ladies watches are not as collectible, this is also tiny, at 22-25mm wide.
The $ value is in the gold, the sentimental value is priceless.
Could you take any clearer pictures of the movement?
View attachment 870060
The movement calibre should be under the wheel where the red arrow is pointing.
The serial number will allow us to date the watch to within a few years, that's the blue arrow
The Green arrow tells us that the watch is badly in need of a service, i would not wind the watch till a watchmaker has given it a service. The movement will be very dry & it would be like running a car without any oil in the engine.
View attachment 870066
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