Hiroshi Kondo was the winner of the Japan Trial Championship at 1974 with Yamaha TY250 and 1977, 1978 and 1979 winner with Honda.
Kondo also rode at SSDT in 1976. Hiroshi rode at SSDT with a special Honda RS250T in 1984 inscribed with the number 154. Below you can see more info and pictures.
Hiroshi made some prototypes before the final Honda RS250T special, following and again thanks to Mr. Hiroshi, you can see the pictures of the first what he made, below these following 3 pictures you can see the numbered 154 prototype.
If you want to see extended information, you can also go to the “From 80 to 85 Honda Bikes” chapter of this site.