Entering the market in 1912, Sunbeam managed to build machines that both enthralled and charmed. Among the last of the old order, Sunbeam's Model 9 was the road-going version of the highly successful TT and GP Sunbeam race bikes, which won the Isle of Man Senior in 1920, 1922, 1928 and 1929. With this race pedigree, the Model 9 was a high-quality motorcycle aimed at the gentleman speed merchant. Capturing the essence of the vintage era with its tall single-cylinder motor and rare single port configuration the Model 9 Sunbeam was famous for being built by meticulous craftsmen. John Greenwood's design was advanced for its day, with a specification which included a crankshaft supported by three ball-bearings, dry-sump lubrication and primary drive enclosed in a cast alloy chain case. Power was transmitted by single-row chain to a three-speed, 'cross-over drive' gearbox. Exacting machines, the Sunbeam for many reflected all that was desirable and necessary in a good machine. By the late 1920s, the public adored them and riders craved them. However, a new decade was approaching and the era of the entrepreneur engineer was coming to an end. Sunbeam had achieved more than most, in what was a golden age of motorcycle design. The rare single port version is in superb original condition.