I were lucky enough to have this in my collection for a while. I sold it to Mike Kelso.
the helmet was nothing special but I thought that the cover was.
"Helmet covers were often unmarked both in the one piece and two-piece Uberzug. There is an alleged AKO on 27 October 1916, which eliminated all of the numbers and letters except for the cross for Landsturm regiments. As you can see from AKO 735 there was no mention of Landsturm."
ps1686 by Joe Robinson
ps697 by Joe Robinson