The Ex-Sir Henry &#39;Tim&#39; Birkin, Hon. Dorothy Paget-owned, Brooklands Outer Circuit Lap Record Breaking The Ex-Sir Henry &#39;Tim&#39; Birkin, Hon. Dorothy Paget-owned, Brooklands Outer Circuit Lap Record Breaking,1929-31 4½-Litre Supercharged &#39;Blower&#39; Bentley Single-Seater  Chassis no. HB 3402 Engine no. SM 3901