A 12-BORE D.B. PERCUSSION SHOTGUN with twist barrels stamped 'London Proof Laminated Steel' on the underside and signed in full on the rib, platinum plugs, signed locks engraved with a pointer and a spaniel respectively, engraved reblued hammers (one comb replaced), figured walnut half-stock, chequered grip and fore-end, scroll engraved iron mounts, silver escutcheon engraved with initials, and original brass-mounted wooden ramrod, signed Joseph Manton & Son Patent, 6 Holles Street, Cavendish Square, London, No.10435, London proof marks, circa 1835