I know a 1456 is a little more highly sought after, but also harder to find correct parts for!! I just picked up a 1456, with straight hood, 3 pt, dual hyd/pto, needs a radiator, (tough to find) sitting on a narrow front, so I need a wide front( tough to find), and the kicker, engine locked up!!! Why, I don’t know yet?? I paid $4500. Probably to much? I don’t know? But it’s saved from the scrap heap anyway!!!
Now an 856 is a great tractor, and I’m sure sought after as well, so if you have straight hoods, ok rubber, I would assume 3pt, dual hyd/pto? If the engine is free, I’m guessing $4-$5000? If stuck, going to guess $3-$4000? Problem with these 407’s, good crankshafts are hard to come by, and blocks! So I hope the engine free, and you can come to an agreement on the 856!!!