A Very Rare .577 Mayall's Patent Experimental Bolt-Action Centre-Fire Rifled Carbine
No. 638, Circa 1865
With sighted barrel rifled with five grooves, calibrated folding adjustable back-sight, bolt-action stamped 'T.J. Mayall's Patent' along the top and numbered '638' on the downbent lever, flat lock, figured half-stock, and regulation brass mounts including butt-plate with hinged circular butt-trap cover opening to reveal cleaning tools (the tools in rusted condition, steel parts rust patinated overall), Birmingham proof marks
63.3 cm. barrel