Comparing: 121 vs. M60

Development began in 1962 on a new medium tank based on the Type 59. The new tank was expected to feature improvements in firepower and armor protection. However, the project was canceled shortly after. Some technical innovations were applied later, in the development of the Type 69 tank. All 121 tank prototypes were destroyed during Chinese nuclear weapon testing.

A deep modernization of the M48 tank. Development of the prototype was started in 1957, and in 1959 the order for production of the first tank was placed with Chrysler. A total of 15,000 vehicles of four modifications were manufactured.