Original WWI U.S. Gas Alert Trench Gong Alarm U.S. Ordnance There is also the usual

There is also the usual wear on the stainless steel rim

help and support to current and former members of the Royal Air Force and their dependents

The badge has the standard R F on the "bomb"

rising at the rear to a cam path closed by a dovetailed bracket held by hexagon nuts

They were the best of the best

Original WWI U.S. Gas Alert Trench Gong Alarm U.S. Ordnance There is also the usualOriginal 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. With all the noise in the trenches, this gong style system was adopted to alert soldiers in the trenches of an impending attack. These gongs had a totally unique sound, and were quite jarring. They were