At the base of this Speed 6 is the rarest and most valuable Bentley worldwide, the Bentley Speed 6 4 1/2 Litre Blower chassis UU 5872. In 1928 the Bentley Boys already established a legendary status. However, this wasn’t nearly enough for Sir Henry “Tim” Birkin. He made 4 – and 1 spare – Speed 6 race cars with the famous 4 1/2 Litre engine attached to a supercharger that was named “Blower”. Chassis UU 5872 wasn’t only the fastest but also Tim’s favorite in which he participated in the 1930 Le Mans race. His participation in this car contributed to Bentley’s 5th and final win at this legendary endurance race.