To my knowledge there are no known examples of the AEF Type Tank Helmet in existence. There is one known example of the Type-15 Experimental Tank Helmet in the collection of the center for Military History in Carlyle, PA. which has, unfortunately, lost it's foamed rubber bumper ring. The helmet shown as Italian, and which gave JAG and I so many sleepless nights, is in my opinion an Italian miners helmet. I have been through the Patton Papers and the light tank unit after-action reports and nowhere is there any mention of tank helmets.
If I were to guess I would say that Patton or a membe