.640 bore diameter, 5" octagonal barrel. Marked on top of the barrel S. Nock Regent Circus Piccadilly England. Finely banknote-style engraving on the box lock frame. Safeties on the hammers. Swivel ramrods. Blue under rib with swivel ramrod. Nice smooth compartment flask. Rosewood handle tools. Mahogany case with brass locking levers. Label inside case Samuel Nock Gun Maker To His Majesty London.
Overall this case set is outstanding, retaining much of the original brown twist finish. Most of the case colors on the frames. The rib has most of the high blue finish. The flask has beautiful untouched lacquered patina. Case is excellent. The tools are excellent.