AC’s famous Weller-designed, overhead-camshaft six entered production in 1922, by which time Weller and his financial backer John Portwine had been ousted by new owner S F Edge.

Financial difficulties saw AC taken over by the Hurlock brothers in 1930 and from then on the firm concentrated on sporting cars aimed at the discerning enthusiast.

The marque’s reputation for producing well engineered and equally well finished cars continued under the Hurlocks’ ownership, enabling AC to prosper despite the higher asking prices that these exemplary standards necessitated.

An improved, under-slung chassis of 9’ 7” wheelbase was adopted for AC’s 1934 range, which was first displayed at the London Motor Show in October 1933.

By 1935 a flat radiator with mesh grille had replaced the previous rounded type, only to be superseded for the following season by the classic slatted version.

A synchromesh gearbox was standard by this time, while other noteworthy features included automatic chassis lubr...