I don't think that it has been mentioned.....the M15 Wurtt. wappen is missing the stag antlers which is typical for this design. If this were mine, I think that I would just accept the condition as is and not remove or correct anything. It is a 120+ year old survivor and lucky to be in this condition at all. I would also speculate, that if you removed the black spike base disc, you would find that the cloth underneath does not match the material on the rest of the helmet. My opinion only.