• Offered without reserve • One of only 51 AC 428 Coupés made • Formerly part of the Haynes Motor Museum collection • Three private owners from new • Present ownership since 2010 The concept of Italian styling coupled with American V8 horsepower was well established by the late 1960s, and no doubt influenced AC Cars' decision to reconfigure its fire-breathing Cobra sports car as a luxury Grande Routière .

A Cobra MkIII coil-suspended chassis was extended by 6" in the wheelbase and despatched to Italy to be clothed in elegant steel coachwork by Pietro Frua, the result looking not unlike the latter's Maserati Mistral.

The first car, a two-seater convertible, was completed in time for the 1965 Earls Court Motor Show, while the following year's Geneva Salon saw the launch of an even more sensational fastback-styled coupe.

The 345bhp on tap was capable of delivering all the performance that customers desired.

Shrugging off the car's 1,416kgs weight and seemingly unhampered by the automa...