"Think the Horseshoe is from the Golden Horseshoe in Covington, Ky. KYFOL03 in Ed Hertel's FREE guide."

...with that attributation.
IMO, The chip is a generic chip.
The Golden Horseshoe was a small joint that booked horse bets only. My father in law was a cab driver at that time and practicly lived in the joint when he wasn't working.
No chips, no games there.

The KY boys got all excited and tied the chip to the joint. Wishful thinking.
I've talked to Larry Trapp about the chip.