Gallagher single-shot percussion rifle, 50 calibre. Round, rifled, bronzed barrel with frog, sliding then tilting. Rear lock with patents "GALLAGHER'S PATENT JULY 17th 1860" and "MANUFACTURED BY RICHARDSON & OVERMAN PHILAD", serial number 21856. Flat bodied dog. Trigger guard with tail to open the barrel. Walnut stock with iron patchbox. Modified counterplate without rod. Length: 99 cm. Fairly good condition (oxidation). Provenance: Collection of Mr F. EXPERT: Arnaud DE GOUVION SAINT-CYR.