Pat, FYI the Tropicanna day cruise ship sailed from the Port of Miami a few years ago. They were one of the few ships that had slot cards. The ship departed for "dry dock" and was last seen rusting at some port on the east coast. The chips they used were intersting. One weekend they had their own rack & the next time I sailed they were using a mixed rack with chips from Aruba! The slot card is not rare. I know of 2 other chippers who have that card in their collections!