The series of poker tournaments sponsored by the corporation formerly known as "Harrah's entertainment" uses what playing cards as their official cards?
Copag:  The company expanded to making playing cards for poker and bridge in 1918. Copag:  Plastic playing cards are their main lineup. Copag:  In 2005, the World Series of Poker slated Copag as their official playing card supplier. World Series of Poker: The World Series of Poker (WSOP) is a series of poker tournaments held annually in Las Vegas and, since 2005, sponsored by Caesars Entertainment Corporation (known as Harrah's Entertainment until 2010).
i don't know