Original U.S. WWII Rare Hawley Paper Co M1 Helmet Liner With Wartime Updated Suspension Technical Handbooks & Manuals The keystone was prescribed as

The keystone was prescribed as the designated symbol of the National Guard of Pennsylvania on 27 August 1879

1901 by Kaiser Wilhelm II on the occasion of the armed conflict in East Asia between 1900 and 1901 with the participation of the German armed forces

The original "sawback" is still quite sharp

picking them up in their enormous six-wheeled army lorries

The spots for the spare bulbs are unfortunately empty

Original U.S. WWII Rare Hawley Paper Co M1 Helmet Liner With Wartime Updated Suspension Technical Handbooks & Manuals The keystone was prescribed asOriginal Item: Only One Available. This is a great example of a rare Hawley pressed paper M1 Helmet liner, without chinstrap. They were only issued in very small numbers during the early days of World War Two. Their structural deficiencies were quickly noted, and the replacement "low pressure" and later "high pressure" liners were put into planning and production shortly after. The Hawley liners were however all that was available during the earliest