Background
Building on their reputation and pedigree as aircraft makers, Armstrong Siddeley began building motor cars in 1919 with the promise of delivering vehicles of ‘aircraft quality’.
Armstrong Siddeleys were low volume, hand-built cars. They offered advanced technology combined with high quality components and craftsmanship.
In the late 1920s, when driving meant crunching through synchro-less gearboxes and breaking into sweat, Armstrong Siddeley had pioneered a semi-automatic ‘pre-select’ gearbox that offered quiet, smooth, driving. It was a breakthrough that gave many women of the time their first experience of driving.
The quality and refinement of the cars earned them the reputation of being, ‘As silent and inscrutable as the Sphinx’.
This prompted the company to adopt the Sphinx as its bonnet mascot and brand symbol.
The 346 Sapphire was introduced late in 1952 and continued until 1958. The six-cylinder 3,435cc engine had hemi-spherical combustion chambers and could be supplied with optional twin Stromberg carburettors, increasing power from 125hp to 150hp and giving a top speed in excess of 100 mph.
It was introduced with the choice of a Wilson electrically-controlled four speed pre-selector gearbox or a four-speed synchromesh gearbox. With the introduction of the Mark II in 1954, Rolls-Royce four-speed automatic transmission became available.
In 1955 a long-wheelbase Sapphire model was launched as a Limousine version (with a divider between the driver and the rear passengers), with the pre-selector gearbox as standard, and the option of a four-speed manual column-shift.
A total of 7,697 Armstrong Siddeley Sapphires were produced, with just 381 in the Limousine configuration.







