4 hp, 550 cc SV single-cylinder engine and three-speed hand-shift transmission.

Triumph was founded in Coventry in 1885, when Siegfried Bettman arrived from Germany. Always competitive, Jack Marshall placed 2nd in the first Isle of Man TT in 1907 and won the single-cylinder class in 1908. At the start of WWI, the Army placed an order for one-thousand 550-cubic centimeter H models and, ultimately, 30,000 were delivered during the war.

This bike is a solid survivor from 1920 and has been in a museum since 1967. It features a pedal start, a belt-drive, and acetylene lighting. The front suspension is Triumph’s rocking spring, and the gearbox is a three-speed hand-shift. This is a very late example of the 550H model, which soon after gained chain-drive and kick start. It would be a rideable delight for a discerning collector.