Turns out several of the later One Club multi property cards from the Mandalay Group were actually from the Circus Circus Reno and those cards have been moved to the Circus Circus Reno listings. Those cards say they are the property of the Circus Circus Reno on the back. Specifically, the original One Club 39th and 43rd issues were moved.

One other card was specifically from the Colorado Belle and Edgewater casinos so the original 40th issue One Club card was moved to the Colorado Belle & Edgewater listings as a new 5th issue there. That card says it's the property of the Colorado Belle/Edgewater casinos on the back.

As a result, the One Club 41st thru 42nd issues were renumbered and the Colorado Belle and Edgewater cards from the 5th issue on were also renumbered. The changes will appear on the ChipGuide tomorrow and in the Slot Card Guide's next release in a few weeks. Hopefully this makes more sense having the Circus Circus Reno and Colorado Belle/Edgewater specific cards listed where they really belong. All the other One Club cards are multi-property cards and mention the Mandalay Group or just Mandalay on the back.