Here's the barrel flats, void of any sort of proof mark.



Here's a top view of the fences. See the dovetail features at the standing breech?
Also, missing here is likely some sort of straddle/mount for percussion cap nipples.



Standing breech and action flats. Also note the lightening cuts in the action bars. I've seen this on British guns and rifles.



I like the engraving on this gun.





The locks. That number is on the barrels too.



Inletting for the locks is very nice



Head of the stock



Action
Interesting features here,
Two bores up high for pins, retainers for the dovetails is my guess.
Lower bore is for a stop-pin for the guard/lever.
Pins are retained via thin steel straps which are retained by small screws.




It really is a wonderful gun, nicely made with beautiful materials. I wonder if anyone here has ever seen something quite like this one.
I have some things to do for it before I run it, but I am enthusiastic about making it bark and taking it to the field