WW2 German Luftwaffe steel helmets

Single decal Luftwaffe m40 Camo steel helmet, Q66/7568. Personalized, But only the rank remains visible: St. Gefr. ( Stabs Gefreiter) The remainder of the name was most likely removed by a soldier who used the helmet later due to a change in ownership ( maybe the original owner has been KIA). The liner and the leather chinstrap has been replaced, but fit to the helmet...