Theory 11 playing cards are exquisitely produced playing cards for collectors, magicians, cardists and anyone else seeking quality materials paired with peerless attention to detail. Each deck comes in a custom designed, embossed tuckbox with a seal of authenticity. Each deck contains the 52 cards of a standard poker deck, a Theory11 certificate card and a double-backed gaff card for tricksters. We import Theory 11 cards directly from the USA and they are otherwise difficult to come by in Australia, so they make a fantastic, exclusive gift for any collector!