For sale is this 1930 John Deere GP, a decent, pretty original tractor in good running and driving condition as can be seen on our youtube channel.  It is on round spoke rears. The John Deere GP is a Waterloo IA built tractor with a horizontal 5.1 litre 2-cylinder engine, tested at 25 HP. It was the first in line from the famous 2-cylinder row crop tractors with the world famous Johnny Popper sound and the GP referred to General Purpose. It was succeeded in 1934 by the new generation starting with the model A.