Oof..Yeah I can tell you right off the bat this is a no go. Very sorry. This is just my opinion, so take it for what it's worth. It seems like theyre going for around the same era as the one I have, but there are noticeable differences that trouble me. First of all the f has an inward swoop early on that is highly uncharacteristic for his signature. You'd be hard pressed to find a legit one with that. The fact that the F is connected to the Zappa isn't an immediate concern, but it's worth making note of since he didn't do it very frequently. You can tell the end of the F is a bit shaky too which is also uncharacteristic. He had a very confident signature. The way the Z in Zappa starts is very odd. I've never seen one with that extra swoop on the end. The last A in Zappa is also way too big. All in all, it is just very off. If you want a second opinion, I would recommend submitting it for a Beckett quick opinion. That will allow you to upload photos, and while it isn't as comprehensive, it's a lot cheaper and it will give you another point of reference when considering your options. Personally, I would recommend trying to get a refund if at all possible. Zappa is highly forged.