I apologize in advance. What I post in this comment is just an opinion. So everyone can continue to think as they want
Two replies from the Russian forum, where I posted photos of the "unique quadarra":
1) All metal parts including the blade are aged with acid. You will never find a struck mark of same shape on original item.
2) On a note to "expert": if you see such incomprehensible garbage, then feel free to write "Syria", there they will make "any whim for his money" for the buyer