1963 Moto Morini 250cc Bialbero Grand Prix

$134,594 Perhaps the pinnacle of single cylinder four stroke development prior to the modern era, the Moto Morini 250 single of 1963 was a throwback to a different era, competing against the four cylinder four stroke machinery of Benelli and Honda and the two stroke twins of Yamaha and MZ with Tarquinio Provini winning four of the ten races in the world championship (he only contested eight), ultimately failing to win the title by two points.