I just want to thank all those who responded. I think we've zeroed in on a model number of 881.
If my neighbor can demonstrate that it runs and that it moves in all gears, I think I'm going to suggest he ask a "soft" $2,200 for it, then firm up around $1,800 to $2,000. If it doesn't run or drive properly, maybe scrap price plus $500. He can always come down some if he has to.
Further thoughts, anyone?
Mark W. in MI