Another "example" of rolled edge felt...
https://www.ebay.com/itm/Imperial-German-Ersatz-Picklhaube-complete/193320566529?hash=item2d02cdbf01%3Ag%3A7xAAAOSwLJdeL1cN&LH_Auction=1
Sort of...
THe top photos shows the missing top "band" and has a bent bolt in its place.
The lower photo shows two zip ties in the place of a part that holds the receiver to the transit face.