This vehicle is often wrongly told about as the World's first tank with sloping armour. An earlier tank with this design was the Swedish Landsverk 100 The chassis was from a BT tank and the turret had a new design later to be standard on various models. The front was pulled down and made in a steeper angle, as the sides, and a new design came to light. This led to the prototype A 20 and model T 32.