I really don't know what to think! I am pretty sure that I have looked at pics of every Variety for this Date and cannot find a Die Marriage (the specific Obverse and Reverse Dies used on all known Varieties) that matches. As I stated before, if you can make contact with Larry Briggs and send him really good pics of the coin, he should be able to tell which Variety it is or steer you to the person who can.
If per chance, the coin is found to be a new and a previously unknown Variety, please post the information on here and PM me if you can. I may have missed something in my searching and viewing of the pics but if it does turn out to be a new Variety, then it will be the rarest of them all, will definitely get my Banner vote and should be more than worthy of a Banner!
Frank