I came so close to missing out on this I really can't believe it. On auctionzip I bought a couple lots of early parts. A third lot did not get a bid and I got afterwards for less than the starting bid. Thank goodness I did since the unusual barrel tang was in a separate lot from the barrels. I'd like to get feedback from you all if you have seen this configuration before and how it should look. It's obviously an over/under pistol with a sliding pan that slides left to right on the lock and has a slot in the barrel. The lower touch hole goes through both barrels and there is a threaded screw hole for the lock plate. The lower barrel leaves no room for a main spring so I am assuming this is for either a miquelet lock or some sort of back-action flintlock. Has anyone seen one?