I have helped several people in your situation. It is always hard to set a price. If the 1655 is a gas and in it's working cloths (not new paint) with new tires and canopy, I would start by asking $7,500. If it is a diesel I would ask more. You may not get it but it is a good start. The JD you can get an idea on Tractor House. Most of their prices are higher than you will get. The Moline I am not very good at. Condition is everything on that one.