W. O. Bentley's personal collection of prototype castings of the post-1931 Bentley winged B mascot development process, comprising 4 mascots mounted on a later white painted wooden display, comprising left to right, Charles Sykes's prototype for the single Winged B, bronze, signed Sykes on the base, 6cm high; a bronze thinner single winged B, after the original design by Sykes, closer to the production model used on the 3½ litre car in 1933, 6.3cm high; a heavy double winged mascot, bronze, 6.8cm, left side of B drilled and a flash-chromed bronze lost-wax casting of a lighter double winged B, the very mascot accepted by the board and used in 1936, 5cm high.