A SIX-SHOT PERCUSSION TRANSITIONAL REVOLVER with reblued octagonal sighted barrel signed in full and fitted with patent sprung rammer on the right side, the receiver engraved 'Registered by Parker Field & Sons', the rod with case-hardened scroll engraved pivoting thumbpiece, case-hardened cylinder, scroll engraved case-hardened action, trigger-guard and butt-trap cover, finely chequered figured walnut butt, blued trigger, vacant silver escutcheon, and much original finish: in lined and fitted mahogany case with some accessories and trade label (lid damaged), by Parker Field & Sons, 233 High Holborn, London, No. 9915, circa 1845