J. Hall
English Flintlock Screwbarrel Pistol by Hall: The 1 1/2" round barrel in .47 caliber, the muzzle engraved with stiff leaf bank. Steel boxlock action engraved with panoplies incorporating oval shields marked J. Hall and London. Birmingham proofs. Folding trigger. Half-cock safety engaging the frizzen. Finely checkered walnut grip with brass lion mask buttcap and silver escutcheon bearing the monogram CTC.
Note: Probably James Hall, Birmingham, 1820-33.
Many thanks to "CWSLAGLEANTIQUES" for the pictures.