Over the years little has been published on the American pressed fiber sun helmets, and we’ve tried to fill in the gaps. Recently an item came up for auction that should help fill in some of the blanks.
This was what appears to be a mold/press for the Hawley designed helmet. The metal is too heavy to be aluminum, but isn’t magnetic so it is likely some form of pot metal. It is heavy/strong enough for stamping of the lightweight helmets.