German helmet liner size 56 marked RBNr. 0/0251/0111 1944

Excellent good sized original 1944 dated zinc liner. The liner is nicely marked RBNr. 0/0251/0111 1944 which indicates production in 1944 by a still unknown manufacturer. The liner is in clearly issued and worn condition and features the initials F.K. on one of the leather flaps. Excellent issued and used late war helmet liner which is perfect to complete a late war combat used helmet!