P 445 Grip
On the door it seems to say ( translated ) "Tractor help in Kungsgården". The car should be dated 1951 or later due to the thin frame around the window in the door, much like the one found on Volvo Duett. The picture is taken 27 years ago when the car had a big ant-hill inside and no frame or floor. To see this view today along a forgotten backroad... Thanks to Björn-Erik Sundström for pictures and information!