Original U.S. WWII Unit Marked Firestone M1 Helmet liner for the 80th Infantry Division, 317th Infantry Regiment - Complete German Ordnance The set projected a signal

The set projected a signal the incoming planes could home in on and could also be used to transmit short messages to the planes via a code key

Unfortunately a previous owner had applied double sided tape to the backside for when it was displayed

Deliberately NOT CLEANED so you can all see what nearly 200 years of attic storage does to anything left to itself

The rocket motor information stenciled is as follows:2

two common sights seen during WWII

Original U.S. WWII Unit Marked Firestone M1 Helmet liner for the 80th Infantry Division, 317th Infantry Regiment - Complete German Ordnance The set projected a signalOriginal Item: Only One Available. The M1 helmet is a combat helmet that was used by the U. S. military from World War II until 1985, when it was succeeded by the PASGT helmet. The M1 helmet has become an icon of the US military, with its design inspiring other militaries around the world. The first liners were produced in June 1941 and designed by Hawley Products Company. The suspension was initially made from strips of silver rayon webbing stretched