1910 Tourist Trophy model with Oxford registration
George Amos Dalby (1881) opened a motor cycle repair business in Bakers Street, Sparkhill next door to where he was born. Later he became the Triumph agent for Sparkhill Birmingham. Courtesy Lou Dalby
Note the flashy underslung handlebars of this TT model and the fearless girlfriend!
I'd say 1910, but with later type oil squirt holder fitted. A rather battered machine!