• 'Time warp' condition with almost all factory finishes preserved
• Matching numbers and a full complement of original accessories
• Most sought-after colour combination
• A perfect example of the growing appreciation for untouched survivors

The ultimate evolution of the landmark XK series of Jaguar sports cars, the XK150 was the fastest and most refined of the breed. Initially powered by the same 190bhp unit as the preceding XK140, an 'S' option became available concurrently with the launch of the sportiest 'open two-seater' roadster bodystyle. Distinguishable by its gold painted, straight port head, the 'S' boasted triple SU carburettors, free flow inlet manifold, 9:1 pistons, lead bronze bearings and a lightened flywheel, these features helping to liberate 250bhp. The later 3.8 version claimed an extra 15bhp but experts agree that the 3.4 'S' is the sweetest of all XK engines.

From the private US collection of a respected Pebble Beach concours judge, the XK150 'S' on offer is described as "one of the most amazing original cars I have seen". It still has its original paint, interior, tonneau cover, hand tools, boot tools, spare wheel, working AM radio, keys, handbook and lubrication chart. Sold new to Mr Hiroshi Okada in New York, half a century it has covered just 63,000 miles and exudes character and history. The owner has just spent $15,000 on a major service to ensure everything works as it did when Mr Okada collected his new Jaguar at Christmas 1958: a rare survivor indeed...