This is the Trumpeter 05589 kit in 1/35 scale, of the ‘Russian JS-2M Heavy Tank (Early production)’.
History
The heavy tank was designed with thick armour to counter the German 88mm guns, and sported a main gun that was capable of defeating the German Tiger and Panther tanks. It was mainly a breakthrough tank, firing a heavy high-explosive shell that was useful against entrenchments and bunkers.
The IS-2 was put into service in April 1944, and was used as a spearhead in the Battle for Berlin by the Red Army in the final stage of the war.