Nice percussion double! Wood doesn't look that fancy, but the earlier percussion guns were often less ornate than the Edwardian era.
It looks as if there are pin holes in the blow-out plugs, which I would place in the early 1850's. Solid blow-out plugs were more 1830's, and were often dispensed with after 1840 something. (My expertise is not infallible).
Hammer skirt cut-outs looks appear very similar to an early 1850's double I own. But, some other features (such as drop points)on mine look more modern in style than yours.
