A 1967 Ferrari 330 GTC Speciale led Gooding & Company's Scottsdale auction on January 29-30, with a sale price of $3.4m.
The car was manufactured by long-time Ferrari collaborator Pinin Farina and is one of only four GTC Speciales built.
This example was commissioned by Italian pasta magnate Pietro Barilla, a close friend of head honcho Enzo Ferrari.
He later sold the car off to an American buyer in the 1970s. It has largely remained in the US since, bar a short return to Europe in the 1990s.
Gooding & Company comments: "A powerful expression of mid-century automotive design, the 330 GTC Speciale exudes the individual character and artistry of a bygone era in custom coachbuilding.
"Commissioned by Pietro Barilla, one of Enzo Ferrari's closest friends and most important Italian customers, as a gift for his wife, 10107 is not only a striking example of the coachbuilder's art, it also possesses an impressive and fascinating provenance."
A 1929 Duesenberg Model J dual cowl phaeton was also a hit with buyers, achieving $2.4m.
The car was built for John Duval Dodge, son of Dodge Motor Company founder, John F Dodge.
Another Duesenberg Model J (with a disappearing roof) made $3m in RM Sotheby's January 29 Arizona sale.
Please sign up to our free newsletter to receive exciting news about classic car auctions.