Introduced at the 1959 Frankfurt Auto Show, the 220 Sb saloon was one of three six-cylinder (W111) models sharing a new up-to-the-minute body style.

This trio featured unitary construction bodies, independent suspension all round (at the rear by means of a single-pivot swing axle), and powerful servo-assisted drum brakes.

Much attention had been paid to improving passenger comfort and safety, the cabin being enlarged and the glass area increased for better visibility, while the incorporation of front and rear crumple zones represented a milestone in automotive safety technology.

Designed to appeal equally to European and North American markets, the sleek new body featured tail fins, a styling device then much in vogue, which gave the models their nickname: Heckflosse (Fintail).

Powered by an up-rated (110bhp DIN, 124bhp SAE in the USA) version of its predecessor’s 2,195cc overhead-camshaft six-cylinder engine, the 220 S was good for a top speed of around 102.5mph.

  Fuel-injected...