This is an M30 purchased in 1977. Size is 7 3/8. It's an old item, so there are fine scratches. Please check the photos. The inner sponge has deteriorated. There is no sponge on the head part either. The chin strap hardware has rust. The shield has been removed. One clear shield and three smoke shields are included, one of which is unused. As this is a vintage item, we do not accept claims or returns. Thank you for looking.