This one isn't getting the attention it deserves, in my opinion. The ironwork is awesome and early in appearance. I may be crazy, but I would think it might have been flint originally...even with one screw!
It appears the comb is facetted or is that a photo artifact? The shaping of the buttstock is excellent!
I'm guessing the forestock tapered down and had an(other?) iron nosecap before the barrel was set back...
Was the hole cut for the compass or was there a grease hole there, if you can tell?