||Original vintage racing poster Bosch Wins Eighth Straight Indy! Bosch the ultimate spark plug. Limited edition of 500 unfolded posters with Al Unser, Jr. Giving his retired father the best birthday present possible by starting from the pole position and finishing in the victory lane with his second win. Little Al's victory brought Bosch an eight straight victory at Indy! Al Unser, Jr's victory was also the 10th for Penske at Indianapolis, the teams' fifth triump in the last eight years and a remarkable debut win for the Ilmor-engineered Bosch spark plus equipped Mercedes Benz 5001 pshrod V8 turbo. The last time Mercedes won the Indy 500 was in 1915 with Ralph DePalma driving his Bosch sparked racer! Rare. Information taken from the July 18, 1994 letter that accompanied this poster.