Plenty of early motorized bikes. Look thru their For Sale listings. Remember to 2x their prices for U.S. dollars. http://www.autocycles.co.uk/index.htm
That's a sharp one, too. LOVE the muffler gas tank, 7 springer front !! There are many that I like in their " For Sale " pages' ALSO, look at their " Spares" page. $$$$$$$ though !!