This paper model is a German VK 1602 Leopard light tank, created by World of Tanks website. The Light Tank VK 1602 "Leopard" was a planned German reconnaissance vehicle designed from March through October 1942, with the serial production scheduled for April 1943, but the project was abandoned before the first prototype was built.
It was originally planned to arm the vehicle with the 75 mm Kwk 41, although that was changed to a smaller 50 mm cannon which was used on late Pz IIIs. The VK 1602 had largely sloped frontal armour, influenced by the Panther medium tank. In order to increase cross-country performance, the VK 1602 was fitted with 350 mm wide tracks. Production was scheduled to begin in April 1943, but the project was cancelled in January of that same year. The reason for this was that the 50 mm L/60 was insufficient for combat against modern Soviet and Western tanks, though it was useful against the British and American light tanks and Soviet amphibious tanks.
Also, the Leopard had a very high weight and the Sdfkz 234 Puma armoured car could be used as a scout, though it was more vulnerable and could not traverse rough ground as easily. The Leopard chassis was also planned for use as the base for either a 20 mm Flakvierling mount or the single 37 mm PaK 36 in an anti-aircraft turret.
You can download this tank papercraft template here: WWII VK 1602 Leopard Light Tank Free Paper Model Download