Type 97 Shi-ki as Commander/Spotter/Radio tank

Followed by the Ka-shi if allowed
It was recently discovered that a replacement was planned for the SHi-Ki. This vehicle would have been known as the Ka-Shi, and would fit the same role. It was a combination of the hull of the Type 1 Chi-He and the modified turret of the Chi-Ha Shinhoto. It was armed with the short 57mm Gun and 2 x 7.7mm machine guns. The turret was fitted with various observational equipment, including a large periscope on the turret roof. It is not known if any of these tanks were built, but a blueprint does exist.