EK2 Iron Cross / Eisernes Kreuz LDO in brown color original war time period Case / Etui

EK2 Iron Cross / Eisernes Kreuz LDO Original War Time Period Case / Etui

This piece differs from the other LDOs EK2 boxes of the time in that it is not the usual black color, but brown.
In such pieces, you usually found pieces from the Viennese manufacturer Rudolf Souval (I also had a brown box marked L/58)    Presumably, he could also make these and similar types of boxes