1963 Mack B-61. It has a 711 thermodyne that was rebuilt many many years ago. Unsure of the miles on it but they are pretty low. The transmission is a 5x4 which has also been gone through and freshly painted. The front tires have good tread but will need to be replaced do to weather cracking. The back tires are in fairly good shape. It has a great big PTO winch and a sliding fifth wheel.