Well, the dial can be rescued...
It looks as if there were some more loose parts (round "filling" of the rings) - they can be secured cautiously with some glue.
I think that a skillful watchmaker can also fill the gap in the Olympic crest with white paint - this will not need the work of a dial restorer.
What makes me more worried is the poor condition of the case.
These 18K cases are very soft and they lose their nice chamfers just by wearing the watch on a regular basis.
The same is with the crest on the caseback.
The loss in definition of chamfers/bevels can not be restored without further loss of more material - the only way to restore the lines would be a professional lapping - but the watch will never look original again - lugs will be too narrow after the treatment, bezel too thin, etc.
The Olympic crest on the case back can not be restored.
The wrong crown can be replaced but original crowns are very hard to find.
Sorry for the bad news.
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