The original vertical slot cards at Rivers Edge Casino in Pittsburgh, PA with the 1, 2 or 3 diamonds had the (I) manufacturer's mark on the reverse. No one ever noticed there was another set of those cards WITHOUT the (I) manufacturer's mark.
Scans of one of the new variation cards without the (I) are on the ChipGuide now and scans for the other levels should be online in a few days.
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