I like these plain gals, myself. Offhand, she looks a little on the 'thick' side, but that octagon to round barrel looks like it's substantial, as well.
How about a few more details on the barrel's measurements... breech, gauge, swamped, tapered(?), the comb and wrist area, pipe furniture, forearm and muzzle (?), sights (?)
I like that 'concave' feature in the lock panel 'teardrop' carving at the tail of the panel. Might lead to identifying a 'potential' builder.
Don't have my Shumway RCA's available, to me, at the moment, but this hardware looks to be along the lines of a featured PA builder with photos of one complete rifle and a 'attributed' relic butt stock.
I just can't understand why I'm always, always, someplace else, when these pieces surface for sale...
Look forward to seeing more of this piece...