Extremely interesting WWI German steel helmet. Looks to have an Italian liner and chinstrap. Very consistent patina on throughout. Could be visually improved by simply letting some oil soak in but I am a purist and don't even clean my finds. It is impossible to see how the liner and strap system are fixed as it is underneath the metal band and I can't pull on the liner too much; It is simply out of site. The chinstrap is not using the original German chinstrap bolts. The liner is in very solid shape except for one spot that looks like a mouse nibble. Leather is soft and supple. There is a "60" worked into the liner, written in puncture dots. The outside rivets are obviously original to the helmet, having the exact same aging and patina, and look to have not been tinkered with. Shell is marked Si66. "Si" is for the firm Eisenhuette Silesia, Paruschowitz Oberschlesien and they only made shells in sizes 62 and 66. 66 is a large size with 68 being the largest made in normal production of WWI helmets. Very mysterious helmet, probably with a fascinating story behind it. Of course if any shoppers have any input I would be glad to hear it.