David brown 990 implematic for sale. This is a very nice running and driving tractor, it starts first time every time. It's an early 1962 model with the original logbook as shown in the photos. It's had 4 owners from new not including myself. The only real issue is that the link arms don't function correctly, they go up on their own and only come down when the engine is off or when your foot is on the clutch. Viewings welcome. Collection in person. Battery not included. £1600 ono