Update:  If you click on the picture or link below it will take you to the Christies auction site.  There you can see that the bidding is now closed and that the helmet sold for 13,145 pounds sterling which converted at today's rate is a whopping $23,523.78!  Hezus Marimba! 

..and are feeling generous perhaps you could pick up this for a trooper in need (aka me).