Oh! Hmm, that's quite interesting. I think very clearly this is just some kind of haphazard makeshift tang. To me the likely story here is that, at some point, the original tang on that blade broke off, and then perhaps many years later someone found the blade and gave it this improvised tang so they could attach it to a hilt and sell it! To me the whole assemblage looks quite modern, so I bet this was intended to be sold to tourists, just tourists that wouldn't disassemble the sword heh
