A RARE 18-BORE D.B. PERCUSSION SHOTGUN with rebrowned twist barrels signed on the rib, case-hardened breeches each with two platinum lines and engraved platinum plug, long case-hardened tang engraved with a partridge and running foliage, signed case-hardened back-action locks each engraved with game birds and a retriever, scroll engraved hammers, highly figured walnut half-stock, chequered grip, scroll engraved blued iron mounts, original brass-mounted ramrod, and some original finish: in original fitted mahogany case lined in green velvet, with some accessories, the lid with illustrated trade label, by Forsyth & Co. Patent Gun Makers. London, No.3370, London proof marks, circa 1827