Could you guys tell me if this a real plate or a reproduction. I found it in a box of stuff I purchased at an old gun collectors estate auction. The box also contained old German coins and a bunch of little photos from WWI. I have been collecting WWII stuff for a long time but really don't know anything about the WWI stuff. Any help would be greatly appreciated.

Picklehaube Helmut PlatePicklehaube Helmut PlatePicklehaube Helmut Plate