Recently i bought a helmet from a guy i have bought from before. I ordered an Italian TR helmet with decal on it. Obviously this is not that helmet, but it is the helmet i got My question is, what kind of helmet did he sent me? I can see it must be a Soviet helmet of some kind, but i have no idea of what period this helmet is from, or country of origin. I can't find any ink stamps. On the liner band there is a stamp "PMM 58", size 58. Rear skirt is stamped "M 92".
Thank you for your time and help.