Type 87 self-propelled anti-aircraft gun
The Type 87 self-propelled anti-aircraft gun (87式自走高射機関砲, 87-shiki jisō kōsha kikanhō) is a Japanese air defence weapon built around the Oerlikon 35 mm twin cannon system also used on the Gepard self-propelled anti-aircraft gun. It uses a modified Type 74 tank chassis built by Mitsubishi Heavy Industries, that mounts a turret and license produced guns by Japan Steel Works.
Source: Wikipedia — Type 87 self-propelled anti-aircraft gun (CC BY-SA 4.0)