BOOK 1 : World Grand Prix 50th Anniversary book. In 1961 the founder of Yamaha started challenging for Grand Prix victories just six years after the Company's inception. This challenge began with great ambition and passion in order to push advanced motorcycle technologies and prove our capability to be one of the leading motorcycle manufacturers in the future through the racing . As you explore the contents of this book , you will understand that our passion and ambition for racing has not changed at all , despite the world changing drastically and technology progressing continually over this half century . Our 50th anniversary is not only a time to look back to the past but also an opportunity to look forward for the next 50 years and beyond . Dimensions book 1 - 28,7 x 28,7 cm. / 144 pages of thick paper / hardcover. BOOK 2 : The 2011 season . The 2011 season was a very eventful year . We began 2011 season in greatshape , having won the Triple Crown titles in 2010 for the 3rd successive year . 21011 was also the year that Yamaha would celebrate its 50th anniversary of participation in the FIM Road Racing World Championship series . Finally the Yamaha Factory Racing Team was able to finish this season second in all standings thanks to the outstanding efforts of our riders , staff , sponsors , suppliers and partners . There were many sporting highs including Ben Spies first MotoGP race win , Jorge Lorenzo's three race wins and second place in the Championship and a total of 14 podiums for the Yamaha Factory Team . We also had the pleasure of seeing many og Yamaha's former racing stars back in action during the numerous special events that we organised to celebrate our 50 years anniversary in Grand Prix racing . Dimensions book 2 - 28,7 x 28,7 cm. / 144 pages of thick paper / hardcover. The dimensions of the slipcase are 29,4 x 28,8 x 4,5 cm. The 2 books and slipcase are in very good condition ( as new ) Total weight 2928 grams ( without packaging )