Yi owo ti a npe ni a "blackjack", ati awon oruko di paapaa lehin mewa-to-okan ajeseku ti a yorawonkuro.French kaadi akoitan Thierry Depaulis debunks yi itan, fihan wipe prospektorer nigba Klondike Gold Rush (1896-99) fun blackjack oruko si awon ere ti American vingt-un, awon ajeseku ni awon ibugbe Oga patapata ati eyikeyi 10-ojuami kaadi.. 
Casino Club Port Talch i Wales – gba a V rẹ Britain ka akoko ofin Itatete - a ti iṣeto ni 1961 nipa ayo MoGul George Alfred James.. 