[2][3]Finnish Bofors 37 mm gun.[4][5]Finnish Bofors 37 mm gun.[6][7]Swedish gun displayed in Parola Tank Museum.The Bofors 37 mm gun was an anti-tank gun designed by Swedish manufacturer Bofors in the early 1930s. Licensed copies were produced in a number of countries. The gun was used by some European armies during World War II, mainly at the early stage of the war.