Ladies and Gentlemen,
here is another one for the specialists. Again I think this is an original late war ErEl. I have, however, never seen that ErEl joins the piping of the centerband in such a sloppy way by simply sowing the centerband + piping together so that the piping is "eaten" by the back seam (normally a dead sure indication of a fake). The cap is presently being auctioned at ebay.de here:
Luftwaffe Offizier Erel Schirmm (for more pictures). Here is what I mean:
Unfortunately one cannot see how the two other rings of piping join. Anyway this is the sloppiest ErEl I have ever seen.
EDIT: I forgot to mention that the seam of the centerband normally is at the front of the cap, not at the back.