To my humble knowledge, the very first " M15" helmets had the two following styles which were a little bit different as the well known mass-produced classic M15 which had tan liner, iron fittings and removable spike . Those two styles were more transition patterns and they are scarce...
- M95 shell (which were still avalaible with black liner from all helmet manufacturers) with all iron fittings and NOT removable iron spike
- M95 shell with all brass fittings and black liner BUT with removable brass spike looking exactly like the "real and well known" M15 spike" with tan or brown liners
Philippe