Triumph Model H motorcyle on display at Kemble Air Day 2009, Kemble, Gloucestershire, England. The placard reads - “Triumph and Sidecar: the 4hp (550cc) Triumph Model “H” was designed in 1914. With 3-speed gearbox and belt final drive it soon became the favorite motorcycle of army despatch-riders in WW1 (1914-1918). This example is fitted with a period wickerwork sidecar and gas lighting.” Note: I can't tell from that wording the exact date of this bike nor whether the wickerwork is genuine (it looks new).