Chicago Bulls 1991 PLAYOFF NBA CENTRAL DIVISION CHAMPIONS Tribune Newsstand Sign Poster. Chipboard / Heavy stock "cardboard" Measures 16 3/4" X 10 3/4". This was the Bulls first title run of their 6 NBA titles. See my other listings for other similar posters, including Sun-Times.  Tough to find Poster - Don't pass this up! FREE SHIPPING! I reserve the right to ship this another method since it's free shipping for the buyer. It will be sent either USPS, UPS or Fedex. May go media mail?