Japan : Diesel multiple-unit : 25, 26, 55, 56 : JNR 55-0 prototype and first lot
Japan : Diesel multiple-unit : 25, 26, 55, 56 : JNR 55-0 second lot, and JNR 26-0


Japan : Diesel multiple-unit : 25, 26, 55, 56 : 25
Japan : Diesel multiple-unit : 25, 26, 55, 56 : JNR 55-100 and JNR 26-100