Two fully armoured vehicles were built .
Two fully armoured vehicles were tested in 1935 , 10 AT - 1 artillery tanks were planned to be built in 1936 but were cancelled ( Izhora Works produced 8 armoured hulls for the program ) .
Two fully armoured vehicles were built and tested in 1935 , 10 AT - 1 artillery tanks were planned to be built in 1936 but were cancelled ( Izhora Works produced 8 armoured hulls for the program ) .