Original WWI U.S. Army Chemical Warfare Service "Klaxon" Siren by Stewart Warner Speedometer Corp - Non-Working MP 40 impact-inertia-fired

impact-inertia-fired

This example doesn’t appear to be named to a particular regiment or soldier

The blade collar is nickel plate over copper

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 impact-inertia-firedOriginal 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