This one?
http://www.ebay.de/itm/CASQUE-A-POINTE-PICKELHAUBE-MILITARIA-14-18-/121804879658?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2047675.l2557&nma=true&si=jETYTSCXx%252FPaWbZHqQLTsszZxn4%253D&orig_cvip=true&rt=nc" onclick="window.open(this.href);return false;
as seen on the pics this helmet has double holes
it has been in in a repair depot and got the appruvel to send back in the field
shown on the mark 'f' 'feldbrauchbar'
nice one by the way