It seems that these are often the victim of either ignorance, wishful thinking or genuine nefariousness.
Kaskaras are one of the most misrepresented weapons I see!
Not from sellers here, but at fairs etc.
Ones with old trade blades seem to often get 'the treatment' or just be misidentified as completely European.
Ones with native made blades of trade blade style are always upgraded to 'ancestral European blade' and modern toss is invariably antique!
Something about the 'Knightly' style of these seem to make dealers think they've got Excaliber!
I'd actually quite like a nice one, but..........