VR Group
When the VR Class Tve1 locomotives proved to be inadequate in some lineside / traffic applications VR Group decided to order seven similar shunting locomotives from Saalasti Oy. These were more efficient locomotives. One of these was the existing manufacturer's model OTSO2, which it had been supplied to some of the industrial plants. While the further six locomotives were designated OTSO2/VR. The locomotives were delivered during 1964.