Thanks to Amy and Sandy for their time and valuable tips. Of course, in KR2, the posts are from another helmet, the liner was reconstructed, ineptly, the fittings look like someone bent them and tightened them again, but the Clemen signature seems to be good. However, I wonder about the appearance of the sheet, the helmet was aggressively cleaned and despite this, corrosion centers were left, which penetrated the metal structure in the form of black points, this is a process characteristic of old steel. I also have another theory, because in the place of attachment of the spitz and the eagle there are additional holes, maybe it is a canopy from another helmet, and KR2 was only made of it. That's my thoughts, I don't know if it's right.