The chin strap and both cockades are missing. The liner is present and compared to most I have seen, it is great. There are some scuffs and scrapes present on the shell.
I don't know much about this type item. There appears to be 2 horizontal holes that are being used by metal clips and leather to hold the emblem on. Looks like 2 holes in back side verticle but nothing in them. The item "WW1 Imperial German Prussian Spiked Helmet Original Pickelhaube WW2 -NOT REPRO" is in sale since Thursday, October 06, 2016.
This item is in the category "Collectibles\Militaria\WW I (1914-18)\Original Period Items\Germany\Hats & Helmets". The seller is "jake1960" and is located in Dalton, Pennsylvania. This item can be shipped worldwide.