I recently found a slot card from AC Hilton that I don't think anyone has noticed. Turns out there are two variations of the 9th issue blue Connection Card, with different text in the reverse paragraph. It's easiest to spot by looking at the list line of text in the paragraph. One starts with "1-800-GAMBLER" and the other starts with "Call 1-800-GAMBLER". The mag stripes are different sizes too by the way.