Last January, Bonhams wanted to sold this pure beauty 1967 Ferrari 275 GTB/4 for around $3,000,000. A little bit too expensive but this yellow four-cam Ferrari is still stunning. This year, RM Sotheby's sold a 1966 275 GTB for $2,205,000 (old post about it).
History of the Ferrari 275 GTB/4
The Ferrari 275 was presented at the 1964 Paris Motor Show with the 275 GTS, designed by Pininfarina and the 275 GTB by Scaglietti, a more sport car. The 275 GTB/4 made its public debut two years later at Paris. Only 331 examples were built until March 1968.
Technical Specification
The Ferrari 275 GTB/4 has an 3,286cc DOHC V12 engine for up to 300 hp with 6 Weber carburetors.
The reason behind the /4 was the first to use the Colombo engine a double overhead camshafts.
For the design, the GTB/4 is more aggressive than the long hood with its plexiglass covered headlamps, the integrated rear-spoiler and the side-vents. Pure beauty...

Sources
Auction at Bonhams
Ferrari 275 on Wiki

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