I need your fast help.
I just found a helmet on an auction site for only 5$.
I don,t know anything about american helmets, but i searched a little
It,s seems to me a US Vietnam helmet.
It,s just only one day until the end of auction and probably, i can get it for this low price.
Can you help me to decide what type of helmet is this?
UPDATE:Im nearly sure it,s an M1,but i don,t know what era.