A collection of the world’s rarest rally cars from the golden age of Group B rally will be on the Bonham’s auction block in August. Cars include a 1975 Lancia Stratos HF Stradale, 1983 Lancia Rally 037 Stradale, 1985 Peugeot 205 Turbo 16, 1985 Audi Sport Quattro S1, 1985 Lancia Delta S4 Stradale, 1986 Ford RS200 and a 1986 Ford RS200 Evolution, all of them in their original and unmolested, factory-built glory and offered by Bonham’s without reserve.