18th/early 19th century, single shot, octagonal to round, 6 in., steel barrel with proof-mark "AB", figured, marked in pointillism at barrel "FONSO BONDE (?)", richly patinated, carved, burled walnut stock, wood ramrod, brass muzzle, side plate, escutcheon, trigger guard, plate, and buttcap

working mechanism, later ramrod, some applied brass at barrel stock likely missing with added element, typical surface flaws and abrasions, pest damage and other wood anomalies probably as made, pitting, corrosion, rust at metal