Set of three unissued early helmet rivets

Unissued set of smooth grey helmet rivets as intended for Early Luftwaffe M35 helmets. Very hard to find these as spares. The pins are unmarked but typical brass based early examples. The grey colour indicates they are made for Luftwaffe M35 helmets. I have found a few sets in unissued condition. This means you get a set of three, in unissued condition as pictured. Very hard to find spares; especially for the early helmets!