Introduced in 1946, the Ferguson TE20 (Tractor England, 20 horsepower) popularised Harry Ferguson’s ingenious hydraulic three-point hitch system around the globe.

Endearingly nicknamed the Little Grey Fergie, the usefully compact and lightweight design was manufactured for Ferguson by the Standard Motor Company, and a form of the wet liner engine they developed for it was adopted for the Vanguard and other Standard cars.

The engine could be tuned to run on either petrol or what was known as tractor vaporising oil, or petrol/paraffin.

517,651 examples of the TE20 are said to have been produced by Standard's factory in Banner Lane, Coventry, some sixty-six percent of which were exported.

Part of the late Mr Lucas’s collection since at least the late 1970s when the DVLA computerised their records, this particular example sports a rare Scottish Aviation Ltd cab.

Designed to be removed and fitted single-handed, the lightweight structure was predominantly made from aluminium (said to ha...