The CALTHORPE-JAP 2¾ h.p. Two-Speed. Price 60 Gns.
The Calthorpe-Jap is the model usually chosen for heavy and strenuous work - fitted with Jap Engine and Enfield Two-speed Gear, as high-powered speed unit, it embraces all that is highest in Motor Cycle Construction.
Credit: The Motor Cycle

Calthorpe Motorcycles of 1919