It appears only two makers of this dagger have surfaced those being
Carl eickhorn RZM M7/66
Horster E& FM7/36
It appears that all daggers were RZM marked although ther is rumors of early Eickhorn maker marked daggers,
Acording to fisher reference there was also an HY Honour Leaders Dagger& a HY Marine Leaders Dagger although it appears no samples have been seen if true these i assume would be worth an absolute fortune ,
steve