953b value

So my boss sent me to look at a 953b this morning its an old ranch tractor so its had the typical low maintence plan. Here are the cons.exhaust is gone past the Turbo obvious oil leaks on the motor lots of grease/grime built up on motor. Needs new belts and teeth.unknown hours. Pros new rails sprockets pins and pads. Starts up good runs smooth. Typical white/blue/black smoke on start up. No smoke at high idle or low idle. How much is it worth knowing the work that needs done plus the unknowns. He wants to put it to work an make some $$. Neither he it the owner know wat its worth. The owner acquired it in a recent real estate deal
http://img.tapatalk.com/d/13/03/08/3y7ygumu.jpg
http://img.tapatalk.com/d/13/03/08/yga2y7u8.jpg
Sent from my PantechP9070 using Tapatalk 2