Thanks for the info guys. I ended up asking the seller if the can cancel the order, which he did.
I collect swords as historical objects an fighting weapons (not so mush as art objects) so a good polish is not too important to me. My goal is to eventually have a nihonto in my collection, so I’ll research and save up for a regular wakizashi out of polish, with fittings (but still in one piece and without active rust).