M31 helmet liner size 64/56 with RBNr. 1943

Excellent light worn M31 pattern German helmet liner in very good condition. Steel band, maker marked with RBNr. 0/0256/0038 (Beidermann und Czarnikow (B&C) Berlin) and dated 1943. The leather itself is a classic late war multi piece construction, that is also maker marked with a RBNr. 0/1305/0327 and dated June 1943, size 56. This liner is intented for a 64 sized steel helmet with a head size 56.