I have been having this 1916 stahlhelm for a few months now and can not make out the makers code. It is lightly stamped and looks like a capital L followed by a lower case j or t. The L could also be a capital I with a period next to it. The letters are followed by I believe 86. Stamped in the dome is R1159. I can not read the writing in the interior rear of the helmet, which appears to be in pencil. I know the photos are horrible, but it has no dents. I wish the liner was still with it.