I'm not sure on the value, but a 5 screw Jaws is pretty rare. If the thread below is up to date only 7 or so are known to exist. Nice find man! Hopefully someone can help you out with a value here
http://www.nintendoage.com/forum/messageview.cfm?catid=5&...
Did you sell it on eBay? If you did, did the guy see a an actual picture of the 5 screw you were selling? If not then I think Krunch has a brilliant idea!
Your best freind is a drug dealer.