World War II German Luftwaffe Helmet (m40 Breadbag stap) Luftwaffe M40 Single Decal Combat Helmet (Stahlhelm M40). The steel construction M40 helmet retains most of its original paint. The decal is almost all gone, having been well rubbed by the breadbag strap that is present. All three liner retaining rivets are intact. The interior of the helmet is a M31 leather liner with all eight fingers intact and the original liner cord is present. The shell is marked with maker and size 'Q62'. 'Q' is indicating production by the 'F.W. Quist, G.m.b.H.' in Esslingen. The reverse interior neck guard apron has a stamped serial number