I realize these threads can get old, but if it saves some newcomers from losing a couple thousand, it's worth it. I'm amazed some of these auctions get past $1000.
Seller has zero feedback. I emailed the seller and he sent me 10 pics of a mint F4. They would have been convincing had I not seen them before on ebay. He offered to end the auction early at $2900, an unbelievably low price. Then, I asked for a phone number just to make sure it wasn't a scam. I got the predictable, angry accusations in poorly worded English that I was trying to scam him, mixed in with "hurry, buy-it-now" pressure tactics. He assured me I could sort it all out after he received payment.
Here's the pic I recognized. I believe it's the F4 that sold for over 10k a few months back.
<a href="http://cgi.ebay.com/Gibson-Style-F4-Mandolin_W0QQitemZ250033969103QQihZ015QQcategoryZ1 0179QQrdZ1QQcmdZViewItem