The good thing on a gun that is not perfect is that there is room for improvement. I won't even consider restoring this gun. But small issues catching the eye can be solved. The issues are:
the loading lever is bent. The screws are damaged, as can be expected after more than 150 years. The wedge is not an original and lacks a groove for the wedge screw. Someone grinded the wedge screw so it would go with the strange wedge.
And, hard to tel from the pictures, there are bright areas, I think from rough rust cleaning. Even harder to see, the whole cylinder is to bright.
Fixing those issues would make the whole gun look nicer.
The loading lever is easy. In the vice, clamped on the right places and little blows of a wooden hammer till it is straight. How on earth does such part become bent in the other direction one use force to press a bullet in?
Then the rough bright spots. Little sanding with 600 or 1000 and then steel wool makes the surface better. Then I used a mixture of a few drops of cold-blue in water and rub that over the spots till
its color matches the gray. Same way I colored the whole cylinder. Makes a world of difference.
screws: The picture tells the story, I use a diamond file to clean it up, waterproof 600 grid, brass brush (steel on the picture, sorry) and steel wool to make the surface smooth but not polished. After that drop them in a bath of water and a few drops of
cold blue. (of course de-grease first) To dark: steel wool and oil. They must not become perfect, just better looking. This way I treated most screws, just not the ones from the hammer, cylinder stop and trigger.