Comparing: Bat.-Châtillon 25 t vs. 121

This experimental tank was a further development of the AMX 13. The tank underwent trials but never entered mass production nor saw service. Two vehicles were manufactured.

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.