IS-2M

"This vehicle is a modification of the IS-2, developed from the early 1950s through the early 1960s. Before the T-10's development, the IS-2 was the main Soviet heavy tank. It remained in service until the mid 1990s. This Premium vehicle has a 20% bonus XP earn and a 35% bonus Silver earn."

The IS-2M is a tier 7 Soviet heavy tank.

Pros
See the IS-2 Berlin for details; only differences are listed here
 * Slightly improved accuracy and gun handling.
 * Higher ammo capacity at 35 rounds.
 * Has 30mm thick spaced armor protecting the hull shoulders, and the shoulders are thicker than the frontal armor.
 * High HP pool of 1300.

Cons

 * Retains the same engine despite increased weight, less mobile.
 * Mantlet is weaker at the gun hole.

A plainly superior IS-2, with slightly better gun handling,more reliable hull armor for angling, and more hit points.