http://www.ebay.com/itm/271914513757
This vintage flight helmet was made in the 1920s. It is made of leather, with a two contrast color racing stripes down the middle. It has snap-down tabs to hold your goggles. The snaps are from the United States Fastener Company, with merged with Carr Fastener in 1929 to form United Carr, so the hardware dates from before this merger, helping to date the helmet. It it stamped a size medium, and a style 113. It measures 20″ in circumference.