The sound of one dime dropping

Paul DiFilippo, who is a contributor to the Weird Universe site, presents us with the ur-mention of the ghostly dime droppers thereon, all the way back in 2008, with all subsequent comments thereto, up to the most recent, which makes clear that to really count, the dime encounter must include the actual sound of the dime being dropped by the agent of the other world.  So encounters on the beach, for instance, or in bed, would maybe not be decidable:  

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