Bentley Motors turns 100 this year, and to celebrate, they've teamed with luxury publisher Opus on a special tome. Covering the brand's history from W.O.'s first aluminum pistons to the latest GTs, The Bentley Centenary Opus is a thorough, loving look at the British marquee. It's also huge at over 800 pages long and nearly a meter wide when opened, and it weighs over 65 lbs. Three editions are available: a "standard" Centenary edition, limited to 500 copies, the Mulliner edition, which is limited to 100 copies and includes giant 20in x 24in Polaroid Portraits of 10 landmark Bentleys and a collection of 56 watercolors, and a 100 Carat edition, which is adorned with 100 carats of diamonds, is limited to just seven copies, and costs a staggering $254,000.