For one, this car, chassis number 0674, has the all-important racing provenance collectors crave. It's been raced by legends Mike Hawthorne and Sir Stirling Moss. In its first year of competition, Wolfgang von Trips took it to second place at the Mille Miglia, while Peter Collins and Maurice Trintigant drove it to sixth at the 12 Hours of Sebring. It even recorded the fastest lap at the 24 Hours of Le Mans (although it retired with engine problems just 56 laps into the race). So yes, consider the provenance box checked.
Besides famous racers and races, it was owned by some huge names in the Ferrari world, including Luigi Chinetti, the founder of the North American Racing Team and the first Ferrari importer in the US. But for the past 45 years, it was a part of the legendary Bardinon Collection, which was known for its wide array of high-quality Ferraris.
While the 1957 335S falls short of the record-holding 1962 250 GTO sold by Bonhams for $38.1 million during the Pebble Beach Concours d'Elegance festivities in 2014, it's still one of the most expensive cars ever sold at auction. And hey, it even landed in the meaty part of its $31.2 million to $35.6 million estimated sale price.