This original WWII leather liner strap is in superb condition. The blackened brass buckle looks to have never been closed (due to the lack of indentations in the leather). It features a combination of United Carr stamped blackened brass and green painted steel rivets, dating the strap's production from mid to late-1944. This would be an ideal strap for a high-pressure helmet liner with either green painted steel or blackened brass A-washers.
WWII Leather Liner Strap With Black Brass Buckle