Includes: •1 MODEL KIT •1 LIQUID CEMENT •1 TANK GUIDE •WORLD OF TANKS DECALS •1 INVITE CODES PC VERSION •1 BONUS CODE PC VERSION •1 BONUS CODE Xbox VERSION Development started at the end of 1938. A prototype was produced in August 1939. The vehicle first saw combat in December 1939 at the Mannerheim Line. The tank was mass-produced from March 1940 through August 1942, with a total of 2,769 vehicles manufactured. The KV-2 Heavy assault tank, version included in the box, was developed on the basis of the KV-1 in January 1940, with a total of 334 vehicles manufactured from 1940 through 1941