Introduced for the 1925 season, the 12/25 was a well-engineered, solidly built design that furthered Humber's reputation as a quality marque.

Based around a conventional ladder-frame chassis with a 9ft 1in wheelbase and 4ft 7in track, it featured all round semi-elliptic leaf-sprung suspension and drum brakes.

Rated at 12hp by the treasury, its 1795cc, four-cylinder engine utilised overhead inlet and side exhaust valves.

Producing some 25hp @ 3,000rpm, this torquey unit reputedly gave the model a top speed of 54mph.

A reflection of its greater merit and finesse, the Humber cost up to fifty per cent more than the equivalent Austin or Morris.

Only in production for two years surviving 12/25s are a rarity.

Reputedly the only surviving 12/25 Limousine known to the Humber Register, ‘RP 2664’ is further understood to have been supplied new by the Imperial Autocar Co.

to two sisters, the Misses Barron of Sproston, Northamptonshire on May 6 th 1926.

Sold to their chauffeur’s brother fiv...