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11035
https://www.rockislandauction.com/detail...er-double-rifleManufactured between 1894 and 1896. Barrels with doll's head extension, beaded blade front and three leaf (one standing, two folding) rear notch sights, and barrels marked "JAMES LANG & Co./102 NEW BOND STREET LONDON" on the left and right respectively. The receiver, hammers, and lock plates feature full coverage fine English scroll engraving with sculpted percussion fences, London black powder proofs on the water table, maker's marks on the rebounding locks, double triggers and sliding hammer block safeties. All visible numbers match. With checkered splinter forearm with engraved fittings, well figured checkered pistol grip stock with engraved grip cap, blank silver initial oval, raised cheekpiece, and solid rubber recoil pad. Stock measurements are: drop at comb 1 1/2 inches; drop at heel 2 1/8 inches; length of pull 14 1/2 inches, weight 10 lbs. 4 oz.

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913 ??
http://www.heritageguns.co.uk/Lang%20913%20SLE/Lang%20913%20SLE%20Details.htmJames Lang & Co, 18 Brook Street, New Bond Street, London
12 bore Back Action, Sidelock Ejector
no. 913
Date of manufacture: Pre-1897

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NSN mentioned
http://www.shotguns.se/html/british_guns.htmlJames Lang London Sidelock ejector Imperial modell. No 1 of a pair. Sleeved and restored but a nice working gun.
Gauge: 12/70
Barrel length: 28”
Choke: 1/4 and 1/2
Weight: 3200g
Price: 2400 € / 23000 sek

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10346
http://www.champlinarms.com/Default.aspx...&GunID=3237#10346, James Lang, 18 Brook Street, New Bond Street, London: A James Lang (Son of Joseph Lang) 450 3 1/4" BPE, A very nice 19th Century Jones Action Underlever Back-Action Non-Rebounding Hammer 450 3 1/4" Black Powder Express Double Rifle with excellent bores, Made in 1891, 28" damascus barrels, Alexander Henry's Patent A&T barrels numbered 3668 & 3669 that most likely were done in house as they are stamped J. L., Full length rib with 1 standing & 2 folding express platinum lined rear sights, Proofed in London, Carved percussion fences, Rear hammer sliding stalking safeties, Swing lever forend release, A neat horn grip cap, Sling eyes, Nickel Silver escutcheon without initials, 14 5/8" LOP over a steel buttplate, 8 lbs. 10 oz., Very Nice wood, Shadowline cheekpiece, 95% coverage of very well cut period scroll engraving that remains sharp and crisp and includes the hammers, top strap, lever, trigger guard and forend, 30% original case colors remain, The damascus barrels have been blacked but a very long time ago, The original wood finish is an honest 85%, The checkering is at 95%, The stock & forend are as solid as the day it was delivered, The metal remains in excellent to excellent plus condition, The bores and chambers are absolutely excellent to near excellent plus & on a scale of 1 to 10 they remain a 9, The rifle is accurate and will produce 2 1/4" groups at 100yards. It has 2 each front sights, 1 the original and a very nice and well-done replacement in the original dovetail cut. This is flat-out one solid 127-year-old gun that has a lot of mileage left in it.

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NSN
https://www.barnebys.com/auctions/lot/47...r-double-rifle/Closed auction
Engraved James Lang & Co. Back Action Hammer Double Rifle
USAUSAEnded 2 Dec 2018
Low estimate
4 500 USD
Non-Affiliate Rock Island Auction Company
About the object
Manufactured between 1894 and 1896. Barrels with doll's head extension, beaded blade front and three leaf (one standing, two folding) rear notch sights, and barrels marked "JAMES LANG & Co./102 NEW BOND STREET LONDON" on the left and right respectively. The receiver, hammers, and lock plates feature full coverage fine English scroll engraving with sculpted percussion fences, London black powder proofs on the water table, maker's marks on the rebounding locks, double triggers and sliding hammer block safeties. All visible numbers match. With checkered splinter forearm with engraved fittings, well figured checkered pistol grip stock with engraved grip cap, blank silver initial oval, raised cheekpiece, and solid rubber recoil pad. Stock measurements are: drop at comb 1 1/2 inches; drop at heel 2 1/8 inches; length of pull 14 1/2 inches, weight 10 lbs. 4 oz.
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NSN
http://forum.guns.ru/forummessage/112/1899653.html

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10652
http://www.salisburyauctioncentre.co.uk/documents/Sporting-August-2015-Catalogue.pdf121 James Lang sidelock ejector 1/4 & 3/4 28" sleeved barrels Sn 10652; Ł120-150