Comparing: Object 777 Version II vs. (R) AMX 50 B

The Object 777 is a unique project of a heavy tank. The vehicle was developed at the Chelyabinsk Kirov Plant. By 1953, the design plans were made, and the dummy vehicle was built. The prototype was to feature a cast hull and streamlined turret. The 122-mm M-62-T2 gun was to be mounted on the tank. However, development proceeded no further. The Object 777 never entered mass production nor saw service.

Developed starting in 1951 by DEFA, the state weapons design bureau. By 1958, the AMX 50 B received a number of improvements, including a low-profile cast hull and torsion-bar suspension. A new oscillating turret with a 120-mm gun was also mounted on the vehicle. Despite the fact that the Maybach engine power provided just 1000 hp, the specialists from the German Gruppe M company were looking for a solution that would allow the vehicle to reach the speed up to 65 km/h. Only one finished prototype of this variant was built.