Holland & Holland Paradox, rebounding back action locks (casehardened). Jones screw underlever action with side clips and top strap extended to comb (casehardened). Damascus barrels (browned) with two folding sight leaves for 50 and 100 yards. London proved. Half pistol grip stock. Anson push-rod foreend.
at least six 12 bore Paradox guns were given limited use by the Royal Naval Air Service in UK-based patrol aircraft in 1914 and 1915. These were used with the same 'Cartridge SA Chain Shot 12 Bore Mark I' and experimental 'Buckingham-Holland' incendiaries as were the larger numbers of Holland & Holland 'Duplex' shotguns also acquired by the RNAS. There is no evidence that FIR 4018 was so used. This example falls within the first group of Paradox guns, s/n 11,500-11,999, production of which commenced in 1885.
Engraved on top rib
HOLLAND & HOLLAND. 98 NEW BOND STREET. LONDON. WINNERS OF ALL THE "FIELD" RIFLE TRIALS. LONDON. 1883 & "PARADOX" FOSBERY PATENT
Engraved on both lock plates
HOLLAND & HOLLAND
Stamped on underside of grip & inside chamber & underside of both barrels under forearm & on forearm & action flat
Stamped on action flat & underside of barrels at breech