Original U.S. WWI Named M1917 SBR Gas Mask with Carry Bag and Anti-Dimming Stick Category_Blunderbuss The Helmet plate is marked

The Helmet plate is marked to the BEDFORDSHIRE CONSTABULARY directly North of London

when a two-regiment heavy cavalry corps was created

Gold (1st class

however we have no way of testing them to see if they work

or add it to your collection as a valued display piece

Original U.S. WWI Named M1917 SBR Gas Mask with Carry Bag and Anti-Dimming Stick Category_Blunderbuss The Helmet plate is markedOriginal Item: Only One Available. Of the 5,250,000 gas masks of all types produced by the U. S. during the war, 1. 6 million of them were the improved version of the British SBR. This mask was officially known as the U. S. Corrected English Small Box Respirator or the U. S. Corrected English Model (CEM). Produced in six sizes (1 through 6) from January to March 1918, the CEM was one of the two most commonly worn American made gas masks used by the