The 1963 Ferrari 250 GTO – the Holy Grail model – won the Tour de France in 1964, which is one of the world’s most famous and historic motor races.
It is a 174mph road-legal racing car and one of only 36 built between 1962 and 1964.
For years the Ferrari, likened to a Picasso of the motoring world, has been based in Germany but shown and driven at events around the world.
The Ferrari, known as 4153 GT, has now been sold for $70 million (£52 million) – a record-breaking figure for a car.
Leading Ferrari historian Marcel Massini, who described the car as one of the top three or four GTOs in the world, confirmed it had been bought by an American businessman.