A Very Rare Large English All Brass Silver Mounted Queen Anne Style Turn-Off Cannon Barrel Flintlock Pistol by HEYLIN, LONDON

 A Very Rare Large Antique English All Brass Silver Mounted Queen Anne Style Turn-Off Cannon Barrel Flintlock Pistol by HEYLIN, LONDON, circa. 1760.  6 1/8", .65 caliber brass smooth-bore turn-off cannon muzzle barrel numbered "1" (most likely one of a pair).  The pistol is in its original flintlock configuration.  The brass frame has fine decorative engraving (a bit worn in areas) depicting a "panoply of arms" below the makers name "HEYLIN" on the top of the breech and "CORNHILL, LONDON" just below the frizzen spring on the right side.  The bottom of the breech is struck with (2) oval "PROOF" and "VIEW" marks just in front of the trigger guard as well as the gun markers mark, a "CROWN" over "I H" (Joseph Heylin).  The steel trigger guard acts as a safety when pushed forward at the half-cock stage.  The wood grip stock is wonderful with a raised high-relief "shell" design executed around the engraved barrel tang, light scratches and dings and the most pleasing high gloss surface from y