About 70 million poker cards are bought in the United States every year.
A total of 2,598,960 poker combinations can be made out of fifty-two cards of a regular card deck.
Four card suits symbolize four estates: clergy (worms), peasantry (crosses), merchants (tambourines) and military (spades).
13 card values symbolize 13 weeks of the year, and 4 suits symbolize 4 seasons.
In the late forties, card makers tried to add a fifth suit. In the USA it was green, in England it was blue.
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