Good info on Ralphs Place possibility.
How about:
T McDonald - Collinsville, IL
He bought about 20,000 same horseshoe but different colors in 1959.

Ivy Miller bought them on the Harp mold in 1944 for The Southland Hotel in Dallas. You can bet Benny Binion handled those.

There are 10 orders for the horseshoe chips in Taylor records on T, Harp, and chain molds.
Some for the same colors. Hard to figure out where some colors were used.