John Deere COMBINE: 4400 (1971- 1974) John Deere COMBINE: 6600 John Deere COMBINE: 7700 (1970- 1974).

John Deere COMBINE: 4400 (1971- 1974) John Deere COMBINE: 6600 John Deere COMBINE: 7700 (1970- 1974).

John Deere COMBINE: 4400 (1971- 1974) John Deere COMBINE: 6600 John Deere COMBINE: 7700 (1970- 1974).