This is a 100% original M17 WWI production Austro-Hungarian helmet. Like many Austrian helmets this one is not maker marked. It does has a B and a heating lot stamped on the inside of the dome indicating the steel was rolled by Bleckmann. Many of these helmets had the chinstrap bales cut off in the 30s, however this helmet wasn’t tampered with. This helmet comes fully restored with liner and chinstrap. You can request the helmet restored as a WWI Austrian helmet, or a 1930s German transitional helmet.