I just bought this. I had emailed the seller prior and she emailed me back saying there's a money-back guarentee of authenticity, and also sent a picture of the inside of the bag (tag and zipper pull). Seems good and honest to me. It wasn't my first choice of vintage gucci(really wanted the black leather speedy I posted about awhile ago), but I like this one as well I just can't believe how low this auction ended!
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160190796764
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160190796764