Ferguson-Brown Company

It has been narrowed down by surviving examples that the engine change from the Coventry Climax to the David Brown took place around tractors serial numbers 525 to 528.

In December 1945 Standard Motor Company Limited announced that an arrangement had been made to manufacture Ferguson's tractors.

The postwar Ford 8N, equipped with Ferguson's three-point hitch, became the top-selling tractor of all time in North America.

After the split with Ford, Ferguson took the opportunity to have the Standard Motor Company of the UK produce a new design, the Model TE20.

The model name came from Tractor, England 20 horsepower (15 kW) but is affectionately known as the Little Grey Fergie.

In 1948 the TEA20 was introduced with a Standard brand petrol engine, following the introduction of the TED20 which ran on TVO (tractor vapourising oil, similar to paraffin).

So successful was the TE20 that Ford nicknamed it the "Grey Menace" as sales of the tractor spread across the world.

Some were used on an expedition to the South Pole in 1958 by Sir Edmund Hillary, a testament to the durability of the machine.

Ford ultimately settled the legal proceedings with a multimillion-dollar sum that allowed Ferguson to further expand his own manufacturing interests.