Arguably the best reference for easy identification of any imperial german headgear.
Highly recommended! And hard to find nowadays.
http://www.ebay.com/itm/Casque-a-Pointe-L-Armee-Allemande-en-1914-de-Didier-LAINE-Top-documentation-/291594106242?hash=item43e45cf582:g:mIgAAOxyTjNSe~hh" onclick="window.open(this.href);return false;
Highly recommended! And hard to find nowadays.
http://www.ebay.com/itm/Casque-a-Pointe-L-Armee-Allemande-en-1914-de-Didier-LAINE-Top-documentation-/291594106242?hash=item43e45cf582:g:mIgAAOxyTjNSe~hh" onclick="window.open(this.href);return false;