Specifications: 249 cc SOHC single, five speeds.

Ducati struggled through the 1960s, dubiously concentrating on producing two-strokes, but the venerable overhead-camshaft single was further developed during 1967. The result was the “wide-case” single, and the new engine made its first appearance in the 350 Scrambler. Soon there was a 250 Scrambler, 350 Sebring, 250 Monza, 250 and 350 Mark 3s, and Desmos. Although the same basic overhead-camshaft engine architecture was retained, the revised crankcases were much wider at the rear where it mounted the frame. The sump capacity was increased to 2.5 litres, and the kick-start was much stronger, as was the new rear frame section. While strength and reliability were improved, the new singles were also heavier than their predecessors.

From 1969 the Mark 3s had a single filler fuel tank, and the 1970 model received a speedometer and tachometer mounted on the top triple clamp instead of in the headlight shell. The Mark 3s were beautifully balanced machines. The example presented here is an older restoration in very good condition, with good chrome and a very original specification.