I believe that this helmet is a copy made in England in the 1960's or 1970's. The stitching is incorrect, the vent holes in the spike are very small, the Wappen looks "fat", the spike has a weird taper, and the Kokarde looks too convex. Check the Kaiser's Bunker website and make a comparison. I can post photos of mine too, if you wish.
Total fake....heavily chemically aged in order to cover up it's "fakedness". Note the leather part of the chinstrap is dyed on both sides. :thumbsdown: