Version #2 – 1965
Second version Bulldozers were paintedorange. They still carried the winch on board, but the wheels were now plastic and the tread design was consequently changed.
Version #3 – 1966
Judging by the presence of the rear winch, the orange color, and the fact that all other details of this toy match Version #2 exactly, it is being classified as Version #3 based solely on its red "N" decal.
