Ww2 german helmet- original visor cut-off, very rare

Very interesting and rare version of ww2 german helmet, visor is cut off, new edge was curved and stamped back together, very good profesional work by my opinion. All parts have same patina, no signs of any postwar cutting, brushing, curving, cleaning or similar- so I believe it was made like this in ww2 period. If you check photos you will probably agree with me. I found it on balkan territory and if that would be ww1 german helmet- I would pronounce it for turkish pattern german helmet- but this one is ww2, so it is very hard to say something for sure.

It was maybe used by muslim coloborators, but this is just my assuming. Anyway, it is extremely rare, probably unique example of ww2 german helmet. Even with that big hole on the top. If you have ANY ideas, comments or offers, you are welcome!