A JOHN THOMAS PATENT 10-BORE SINGLE-BITE SNAP-ACTION TOPLEVER HAMMERGUN, serial no. 657,
32 3/4in. nitro reproved damascus barrels, 76mm chambers, bored approx. 3/4 choke in both, carved percussion fences, rebounding back-action locks, the action flats marked 'PATENT 3091-1871' in a triangle, 14in. pistolgrip stock with steel heel and toe plates, some native enhancement to chequering, weight 8lb. 13oz.