FORSYTH & CO., LONDON A GOOD 12-BORE PERCUSSION SINGLE-BARRELLED SPORTING GUN, serial no. 4261, circa 1840, with sixteen-sided to round 30in. barrel retaining a strong amount of period finish, the top-flats at breech blended to octagonal and signed 'FORSYTH & CO. No. 8 LEICESTER ST. LEICESTER SQ., LONDON', the underside of breech with serial number and barrel forger's mark 'T.P' (for Thomas Parkin of 5 Meard's Court, Soho), moulded multi-band girdle at the intersection, platinum lines and vented plug to the colour hardened patent breech-block, borderline and scroll engraved top-tang extending to tip of comb, borderline, scroll and gamescene engraved colour hardened back-action lock signed 'FORSYTH & CO PATENT' below the engraved and dolphin headed hammer (much finish remaining), walnut half-stock chequered at the wrist in the Forsyth fashion, iron furniture (traces of finish in sheltered areas), horn fore-end tip and brass mounted ebony ramrod.