Very old blade knife

Very old and rare blade knife, has a number, God knows what this number is, I don't know, it's written 4171 The blade or metal, God knows what type it is, knife or sword God knows if the head is gold or copper, whoever has knowledge please share the information with us Open for offers, first bid wins Note: This blade is inherited from my late relative, may God have mercy on him. Please give this item its due appreciation, thank you