Cannons for Sale from WWI and before!
The QF 12 pounder 12 cwt gun was a common, versatile 3-inch (76 mm) caliber naval gun introduced in 1894 and used until the middle of the 20th century.
In British service, "12 pounder" was a rounded reference to the projectile weight and "12 cwt" referred to the weight of the barrel and breech: 12hundredweight = 12 x 112 pounds = 1344 Pounds, to differentiate it from other "12 pounder" guns.
Military designation: QF 12 pounder 12 cwt naval gun 
Country of Origin: United Kingdom United Kingdom
Developer / Manufacturer: Elswick Ordnance Company
Japan Steel Works Canadian Pacific Railway
Year of development: 1893
Start of production: 1893
Model variants: Mk I, II, V (British)
Model 1916, 1917 (Italian)
Weapons category: Cannon
Pipe length: 3.048 (40 caliber)
3 inch (76.2 mm)
Cadence : 15 rounds / min
Elevation range: depending on Lafettierung angle degrees
Traversing range: depending on Lafettierung