The Cooper Mk IV was the 1950 model and was used by Stirling to win the Monaco Formula Three race. Harry Schell was runner up in another Cooper MkIV and after the Formula Three race the 500cc JAP engine was replaced by a 1000cc JAP engine and took part in the Monaco Grand Prix thus becoming the first mid engined car to take part in a Formula One race.
Surely Farina, Fangio, Fagioli et al raced a mid-engined car in a World Championship Formula One race before Harry Schell!
