Original WWI U.S. Army Chemical Warfare Service "Klaxon" Siren by Stewart Warner Speedometer Corp - Non-Working MP 40 and striking it with a

and striking it with a small hammer and the cannon would fire

All buttons appear to be present and as this is an evening dress they are purely ornamental

-Correct color original paint on interior and exterior

It is possible that they were swapped out by the manufacturer when the blade was reground

Original WWI U.S. Army Chemical Warfare Service "Klaxon" Siren by Stewart Warner Speedometer Corp - Non-Working MP 40 and striking it with aOriginal Item: Only One Available. Gas Warfare, now banned by International Treaty, was first introduced in WWI on the Western Front, and the results were devastating. Soon everyone was issued with a gas mask and was required to carry one at all times. Various types of "gas alarms", from simple wooden rattles to mechanical sirens were employed to help warn the soldiers that it was time to put the mask on. This lovely WWI manufactured siren is in non