A big caliber single shot percussion gun by Holland & HollandC

dating: Mid 19th Century provenance: London, Smooth, round, browned, 22 mm cal. barrel with short rib signed 'HOLLAND AND HOLLAND LONDON', foresight; engraved tang. Forward spring lock engraved with floral motifs; half wooden stock with palm rest and checkered bases. Horn fore-end cap. Iron mounts decorated en suite. length 129 cm.