I can't be much help, but I do have a rifle with pretty much the same patchbox, including engraving, as does the lower rifle.
Sellers lists an S & J Shaw, percussion rifle, unlocated in Tennessee. However, I'm not familiar enough with Tenn made guns to say if that a Tenn made gun or not. This is the gun that Joel mentions, and is somewhat similar in that it has the pinched tail on the lock and sideplate moldings, at one time had a similar high comb, and maybe has a similar line to the cheek piece design. Mine also has the same style of engraving that is on the patchbox of the lower gun, but mine has it on the butt plate, trigger guard, toe plate, etc as well. I can't see if the one you're looking at does or not.
Majorjoel mentions a New York possibility, but my gun is unsigned or the name rusted away, so was just a guess.
John