I'll start by saying that I'm not an expert on Manny bats, so don't take my word as law. But I saw this when it was on ebay and it just didn't look right to me (in terms of characteristics). Just because an item has PSA authentication doesn't mean it's always legit. It is usually better than no authentication, but you also have to do research on your own, that's the best "authentication" you can get. That's why it's usually a good idea to consult player experts and others for opinions before you buy a bat.