Original U.S. WWI Russian Revolution M1917 AEF Siberia Polar Bears Helmet With Patched Pattern 1912 Winter Service Coat - 31st Infantry Regiment P-1853 Enfield so this was definitely displayed

so this was definitely displayed for a long period of time

The Turner Publishing account says that:

It is marked on the bottom under the base plunger with:E

military districts and specialised arms belong to the Ministry of Defence

The included factory letter does not indicates these either

Original U.S. WWI Russian Revolution M1917 AEF Siberia Polar Bears Helmet With Patched Pattern 1912 Winter Service Coat - 31st Infantry Regiment P-1853 Enfield so this was definitely displayedOriginal Item: Only One Available. This fine extremely RARE example offered with liner and partial chinstrap has wonderful original period white paint. This is a neat example of a genuine USGI Great War helmet from a well known infantry regiment of the US army. The best feature of all is the original hand painted insignia of the American Expeditionary Force Siberia 31st Infantry Regiment known as the "Polar Bears", with the same insignia present on