A 5x3 index card signed by Jack Brabham, the Australian former racing driver who was Formula One world champion in 1959, 1960 and 1966. In 1962 he founded his own racing team and established the Brabham marque, which became the largest manufacturer of customer racing cars in the world in the 1960s. In 1966 Brabham became the first - and still the only - man to win the Formula One world championship driving one of his own cars.