I used to have a WWII style U.S. helmet when I was a kid. What era it was actually from (WWII, Korea, Vietnam) I don't know. Just the steel outer part of it not the liner like you see pixs of Patton wearing on the cover of Bill O'Riley's new book. We used to cover our faces with it and then have others bury us in the sandbox including the bottom inch or so of the helmet. Then we would pop out of the sand like awakened mummies when it started getting hard to breath. I wonder what ever happened to it?? Probably worth a Andy Jackson or more now...