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If your clock is not working, its value is minimal. No one wants to buy a non-working clock (unless it is something very rare and valuable) because it is impossible to know ahead of time what the repairs will cost. Also, if the face needs restoration, that's an expensive repair.
Robert QW King was not a famous clockmaker. Robert Heine was the retailer who sold/repaired the clock in 1928.
My advice to you is to give the clock to a family member who is wiling to put in an unknown amount of money to get the clock working again, although, speaking monetarily, it will not result in a valuable clock.
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