Comparing: Jagdpanzer E 100 vs. Object 263

The E 100 was conceived as the basis for a self-propelled gun, an antiaircraft vehicle, and a tank destroyer. However, development was never started.

The development of a heavy tank destroyer on the basis of the IS-7 heavy tank was started in 1950. Three design projects were developed, one of which resulted in a full-size wooden prototype. However, further development was discontinued due to phasing out the IS-7 mass-production.