It's possibly a Victorian piece, at best. It could also very easily be a 20th century theater prop. While one can never fully judge based off of pictures (particularly slightly blurry pics like the seller has), I feel I can safely say it isn't medieval. The guard certainly isn't, that's for sure. The blade looks pretty shoddy, and is probably a boat anchor based on what I can see of the taper and shape (though it's hard to tell). The crescent moons are a European decoration, but much later period (I haven't seen them before the 18th century), and since they are stamped rather than engraved, that means they had to be put on before the blade was hardened (*if* it is hardened), so it means the blade can't be that old. And, as Ed points out, if it were the real deal, that sword would be selling well over the 10K mark, if not higher for it's condition.
I'd feel rather safe in saying it's not a modern repro. It's really hard to tell from the pics, the slight waviness in the blade and blade edge, look to be hand-made. The pitting, as Sir Edward said, seems to look right in the pics.
I have to disagree. I've seen modern reproductions "aged" to look more authentic than this piece does. The pitting is very, very easy to fake. And the waviness only means that they did a bad job of grinding... you see the same thing in all of the cheap $20 decorator swords from Pakistan. If anything, the waviness makes it seem more likely to be closer to modern made than anything (though that alone isn't proof).
