76 mm divisional gun M1902

The 76.2 mm divisional gun model 1902 (Russian: 76-мм дивизионная пушка образца 1902 года) was a Russian light field gun used in the Russo-Japanese War, World War I, the Russian Civil War, and a number of interwar armed conflicts with participants from the former Russian Empire (the Soviet Union, Poland, Finland, Estonia, etc.). Modernized versions of this gun were employed in the early stages of World War II. == History == This gun, known as the "three-incher", (трёхдюймовка) was developed by Putilovski Works in Saint-Petersburg in 1902.

Source: Wikipedia — 76 mm divisional gun M1902 (CC BY-SA 4.0)