The beautiful and unique Caterpillar Sixty fitted with an Atlas marine application 24 litre 4 cylinder common rail diesel engine.
Built in 1927 Henry J Kaiser fitted the Atlas to increase power and reduce fuel consumption in comparison to the usual petrol engine.
Engine produces 100hp at 550rpm.
This particular tractor is thought to have worked on the Hoover Dam.
Owned by the late Roger Desborough.
Seen here at the Heveningham Country Fair.