WW1 trench knife or combat knife or Grabendolch with Ersatz scabbard

This is a beautiful example of a WW1 trench knife or combat knife or Grabendolch. Very nice example with an ersatz material belt hook made out of recycled woven paper. The brown leather closing flap features the typical German press stud. The blade is marked with an unknown maker logo which could most probably be identified exactly. The knife is in good used condition and shows some wear and age.