Today is National Collector Car Day and eBay Motors is celebrating by auctioning off a GM Futurliner. We worked with the company to assemble this list of the ten most expensive vintage cars ever sold on eBay. Bids start at $700K.

10.) 1971 Ferrari Daytona 365 GTB/4-A

Auctioned For: $700,000

Details: There were only a handful of race-prepped 365 GTB/4-A Daytonas that came from the factory- 14 in total, over three production runs in three years. They had winglets along the front fenders and flared wheel arches, as well as approximately 400 pounds less wight to carry around. Because this car is from the first batch from the factory, it retains the road car's 352 horsepower V12 (later cars got upwards of 450 horses). Even with their extensive diets (which included plexiglass windows and aluminum and fiberglass body parts) they were still heavier than their opponents, but surprisingly, more durable. Other Daytonas placed as high as fourth in the 1971 Tour de France and 12th at Sebring that same year.

Photo Credit: Skyscraper City

9.) 1973 Porsche 911 Carrera RSR

Auctioned For: $750,000

Details: When a change in rules in 1972 made the Porsche 917 prototype suddenly ineligible, Porsche went headlong into the World Sportscar Championship's new Group 4 GT class. There, the company's 911 would face down a major rival in the Ferrari 365 GTB Daytona Competizione. The 911 racecar had to be robust and fast, and Porsche engineers responded with a 2.8-liter boxer six producing 300hp (soon to be replaced by a 310hp 3.0 liter), fitted to a a purpose-built race 911 called the Carrera RSR. With drivers Peter Gregg and Hurley Haywood, the RSR owned the 1973 Daytona 24 hour race — prototypes and all — the 12 Hours of Sebring, and just about everything else.

Photo Credit: Picturepush

8.) 1969 Mercedes-Benz 600 Pullman

Auctioned For: $750,000

Details: Mercedes-Benz 600 Pullmans were owned by Hugh Hefner, Elvis, Jack Nicholson, Coco Chanel, John Lennon, and now, one lucky eBay bidder. Because of their exceptional size and weight, these cars did away with the usual Mercedes six cylinder engine for a V8 motor that displaced 6.3 liters. No two Pullmans are exactly alike: all feature wood-paneled chauffeur's compartments up front, but the passenger compartments in the rear were built to each buyer's custom specifications. The car sold on eBay was one of just 2,677 built.

Photo Credit: We Are Private

7.) 1953 Rolls-Royce Silver Dawn Cabriolet

Auctioned For: $750,000

Details: This 1953 Rolls-Royce features a one-off custom alloy body by H.J. Mulliner. It's smaller in size than a comparable Silver Wraith of the same year, and the regular models share their chassis and bodies with Bentley Type Rs of the same vintage. It had a 4.6 liter inline-six engine mated to an automatic four-speed gearbox. It was originally ordered by Texaco attorney Howard Kizer, whose family helped finance the construction of the Indianapolis Motor Speedway. During the Silver Dawn's six year lifespan, 760 were produced.

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6.) 1967 Ferrari 275 GTB/4

Auctioned For: $850,000

Details: 1967 was the second year of production for Ferrari's new 4-cam V12 engine. It produced an even 300 horsepower and could propel the GTB/4 to somewhere in the vicinity of 165 miles per hour. This was also the first Ferrari offered from the factory without wire wheels, opting instead for competition-inspired alloy wheels. Unfortunately, many owners replaced these with more traditional wires after the fact. It regularly places well on lists of the best sports cars of the 1960's, and we can't help but agree.

Photo Credit: Artcurial

5.) 1967 Chevrolet Corvette

Auctioned For: $850,704

Details: 1967 was the end of the line for the Sting Ray, but by then it had reached its development peak. These are considered the best of the C2-generation Corvettes for a number of reasons which include: cleaner, more refined styling, Rally wheels instead of wheel covers, and the very-nearly-racing-spec L88 engine option. The L88 was factory rated to produce 430 horsepower, though in reality that number was closer to 560. When buyers checked the L88 box on the order form, they were required to check another few boxes as well, including a Positraction differential, beefed-up suspension and brakes, and radio and heater delete. These cars were very much barely street-legal race cars, and the public knew it, only ordering 20 in 1967.

Photo Credit: Popup Pistons

4.) 1970 Plymouth Hemi 'Cuda

Auctioned For: $899,000

Details: Whoever originally bought this car knew they were getting something special, and rare. Only 652 Hemi 'Cudas were built in 1970, and this one was sold with only 76 original miles on the clock. It has the legendary Mopar 426 Hemi V8 under the hood, and puts down 425 horsepower.

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3.) 1937 Alfa Romeo 2300MM

Auctioned For: $1,200,000

Details: We covered this famous Alfa Romeo when it went across the virtual block in 2009. It has an illustrious past, having raced in the Mille Miglia, with professional chauffeur Ercole Boratto at the wheel. Who did Mr. Boratto usually drive around in the car, you ask? None other than the car's original owner, Benito Mussolini. So not only do you get an extremely rare, vintage race car, you get a part of history.

2.) 1933 Duesenberg SJ Speedster

Auctioned For: $2,600,000

Details: Only 36 supercharged versions of Duesenberg's Model J (hence "SJ") were made between 1932 and 1937. They produced 320 horsepower, and were reported to have been able to do 104 miles per hour in second gear. About half of all Duesenberg Model Js were bodied in-house, the others were sent out to different coachbuilders around the world at their owner's discretion. No two look alike.

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1.) 1959 Ferrari 250 GT California Spyder

Auctioned For: $3,260,100

Details: The 250 California Spyder has pretty much everything you could want in a Ferrari. Columbo-designed V12 up front, beautiful lines, no roof- the list goes on and on. This car is a long wheelbase model, making it slightly larger than the forever famous 250 California of Ferris Bueller fame. It shares its engine with the 250 Tour de France, with 237 horsepower. A racing version won the GT class at Sebring that year. Only 45 examples were made, with no two exactly alike, before Ferrari switched production to the short wheelbase model a year later.

Photo Credit: Excess News