Just listed on my Ebay auctions-All Sport Snowmobile Motorcycle helmet from the early 1970s. The inspection tag is dated Dec 19 1972. This helmet is made of General Electric LEXAN polycarbonate resin that is 8 times stronger than fiberglass. See more Vintage Snowmobile and Winter Sports items, plus a TomTom XL 335T portable GPS unit and all my auction items here: http://www.dollykam-vintage-collectibles-other-great-stuff.com/