This is my first posting here. I have what appears to be a M1916 German helmet shell. It has no liner, but the little pointed things for the chin strap are present. There is nothing that looks like battle damage. I have looked carefully for stamped markings, inside and out, and found none. A couple of questions - 1. Is it authentic? I'd say that it is, at least the metal age patination appears authentic. 2. There is a painted black cross on the front. Could that mean anything? I have understood that such hand markings are not that unusual, and also it could have been a Freikorps marking. About what would the value be on the US market at present? I bought this at an estate sale about 20 years ago, and am about ready to let it go via eBay, etc., if it has any significant value.