Pure Gold Coin Christian R. Lassen Watch with Ruby and Diamond

Christian R. Lassen Ladies Watch

This watch can be used on both sides, with the watch part and the pure gold surface. Considering the current gold price, I think it is a rare watch.
The watch itself is in very good condition, but the box and other accessories have some age-related stains.
About a month ago, it was working, so I think the battery is dead now. I would appreciate it if someone who can replace the battery could purchase it.
I am not familiar with watches, so the images are all you have.

1/30 oz pure gold coin
Ruby approx. 0.02ct
Diamond approx. 0.02ct

Accessories… Box, booklet

Operation… Defective (not working)
Scratches, cracks, etc… Yes

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