Found this M15 haube, it will only needs very minor restoration, the trims are all there, liner losing some of the tongues, but otherwise intact.
And for another 9 hours to go, its still USD 139.50, and this is the best part, its marked to JR 170, which is Baden's Infantry Regt 170 (9 Bad. Inf-rgt. nr 170 Xiv), raised in 1897, its a non Prussian helmet! Its Baden, love these baden haubes!
So all you need is a baden M15 wappen.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...em=170038559437
Hope this helps,
Mush