There are some unusual designs in playing cards, even the shape of the card.
There are a number of court card designs that have never actually been produced as cards. It's a shame some of them never were.
Cigarette Cards, Trade Cards, Miniature Playing Cards and other ephemera.
De Reszke Cigarettes “What the Stars Say” astrology cards issued by J. Milhoff & Co., 1934
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“Magic Poker Cards” are often found inside Christmas crackers along with party hats, puzzles and jokes...
Tobacco cards with miniature playing cards inset into top corners, printed by Litografía y Tipografía Fabbri Hermanos, for Roldan y Cia Tobacco, Lima, c.1895.
Standard playing cards are based upon traditional designs, and are used for card games.
The Odd Trick - a bit of Edwardian naughtiness.