细节
A Testophone musical car horn,
1911 model, with four trumpets and seven interchangeable revolving perforated cylindrical valves, marked Le Testophone ... Systme Etienne Teste ...1643, with various patent dates to 1909 -- 22in. (57cm.) long (lacking rubber bulb), with instruction sheet showing the tunes on each cylinder; and two leather motoring jackets (3)