Cool littles item(s) , Sanderson .
I'm with Texasbadger , concerning it's intended use .... and agree with the (appears to be) Greek origin .
Knowing if the colorful decorative components have been made as in cloisonne/glazing (glass) method , or as in enamel (paint , baked or otherwise) would be of some help dating the knife/scabbard &/or adding/subtracting from its' value (IMO) .
Would be an O.K. display in a shadow-box , maybe ?