I have two vintage motor cycle helmets, one is a 1968 Snell Memorial Foundation helmet and the other is a 1970 German half helmet by Premier helmets . Both are well used, the Snell helmet I use at the Bonneville salt flats in 1969 on a 1969 BSA Rocket 3, couldn't get past the 181 mph mark. The Snell is $50, the Premier is $40 or $75 for the both.