I don't know enough about them to tell if this is genuine. But it could be and I know they are rare. You would certainly need to be sure before laying down that kind of money!
I have no financial interest in this item and I've posted the link just for interest sake.
For some reason the link won't take you to the exact item, but if you go into the magazines section and search for item c5-b, will get you there.
Mark
URL=
http://www.dandbmilitaria.com/magazi...set-boxed-c5-b