M35 DD in Germany: Third Reich: Uniforms, Headwear, Insignia & Equipment Posted September 26 Martin The newer split pins (1940ish - they may be dated but probably best not to play with them too much to see) are holding the finished colour better than the older helmet. The steel alloy of the later split pins never seem to rust as much as the steel helmet so the paint looks better. Roller buckles are pretty rare. Some were manufactured through the 20s and clip onto the helmet bale/d ring with a steel clip and are sewn on at the other side. These are normally only found on transitional helmets (M16/M17etc), sometimes used on early M35s. All chin straps were basically the same from 1939 on, 13 holes I believe. They started off all alluminium, then most became steel in 1940 with the quality falling away later in the war. Chinstraps broke a lot, due to quality, hanging from webbing and general use so were replaced fairly often. Roller buckles are known on all helmet variants (M35/40 and 42) some sewn onto the bales, some made from Belgian or French Adrian straps. So, not unknown and not something to worry about, just a bit more of a life story for the helmet. Great helmet to keep. I made up the H-RTS230/245, just to see if anyone was actually reading or paying any attention.