A 12-BORE D.B. PERCUSSION GUN with rebrowned twist barrels, case-hardened breeches each with platinum plug (nipples missing), scroll engraved tang, signed locks finely engraved with scrollwork and a retriever, figured walnut half-stock, chequered grip and fore-end (minor chip), engraved iron mounts, gold escutcheon engraved with owner's crest and initial, and brass-mounted ramrod, by Robert Adams, London proof marks, circa 1850