Janssen Sons & Co External Hammer 12 Gauge Side-by-Side, Jones Under-Lever, 30" Barrels, Antique Belgian Fluid-Steel Construction
This Belgian-made Janssen Sons & Co Jones under-lever shotgun combines external rebounding hammers, fluid-steel 30" barrels, and factory scroll engraving in a true antique package. Built between 1893 and 1923 and proofed for early smokeless loads, it carries matching serial number 9059 on all major parts and retains its original fixed Improved Cylinder chokes. Collectors will note the Liege ELG, Perron, and star controller marks that trace the gun’s compliance with the tightened Belgian proof standards of the era.
Condition
Overall Condition: Fair – Extensive signs of prior use and handling.
Bore Condition: Fair – Generally clean with some residue, light corrosion, and visible wear.
Specific Condition Notes: The buttplate is missing. Minor to moderate scratches, scuffs, and blemishes are present on metal and wood surfaces.
What’s Included
- Janssen Sons & Co external hammer 12 ga side-by-side shotgun (serial 9059)
Janssen Sons & Co employed the robust Jones screw-grip under-lever, prized for solid lock-up and straightforward maintenance. The extractor (non-ejector) system keeps the gun mechanically simple and period-correct.
The 30" fluid-steel barrels feature a plain matted rib topped with a single brass bead. Both tubes are stamped 18,7 and carry fixed Improved Cylinder chokes, offering a wide, even pattern ideal for classic upland or clay pursuits.
Case-hardened steel receivers, hammers, trigger guard, and tangs exhibit factory scroll and leaf engraving that remains crisp despite wear. The patina shows authentic field use while still highlighting the original craftsmanship.
The walnut stock wears a semi-pistol Prince of Wales grip with relief carving and a splinter fore-end. Though the buttplate is absent, stock dimensions remain unaltered, preserving the shotgun’s antique profile.
Proof marks include the crowned oval ELG final proof, the Perron inspection stamp, and multiple star-over-letter controller marks, confirming Belgian origin and compliance with smokeless powder standards.