Monstrous Moroccan Koumaya Dagger - 10176

Up for sale is this Koumaya dagger of unusual dimensions: 24 inches, compared to 16 17 inches "normal" size Koumaya (Shown below next to this one). The style of this dagger is also known as: Chapeau de Gendarme (The hat of the policeman) after the shape of the pommel (7 inches wide in this unusual case) Blade of typical shape but large dimensions: 14 inches long and somewhat crudely made. Both handle and scabbard are brass, covered with thin silver sheet on the front face, chased and engraved. The wide pommel is set with four small glass squares. The actual use of such big Koumaya dagger is still a mystery: It is definitely old, early 20 C. and not a tourist souvenir. Is it for ceremonial use? or may be an advertisement to a Koumaya maker?? In any case it is an unusual and interesting authentic item.