Other card types. Discuss Other card types, on ChipTalk.net the place to go for your Poker chips and gambling tips. Read it in Poker and Playing Cards.
Please link or post an image or describe some more. All paper cards are technically cardboard, but that's obviously not what you're talking about. Duplex/triplex? more details please.
And drat, I've reached my chip limit for this "24 period".