The Ferrari 500 TRC (Testa Rossa Type-C) Spider is one of the last four-cylinder Ferraris, and one example is set for auction, where it could fetch $4 million.

Only 19 of these cars were built, and the sixth one, chassis number 0670 MDTR, is hitting the auction block on Saturday, May 21 at RM Auctions.

Powered by a 1.9-liter engine that makes 190 horsepower and mates to a four-speed manual transmission, the Ferrari has two Weber carburetors, an independent front suspension, a live rear axle, and hydraulic four-wheel drum brakes.

This particular car won its class at the Monte Pellegrino Hillclimb in Palermo, and it's expected to command a price between 2,600,000 and 3,300,000 euros, which is approximately between $3.6 million and $4.6 million at current exchange rates.

Whoever takes this car home will be able to say that he or she is the owner of one of the world's rarest Ferraris.

Not a bad way to spend a Saturday.

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