The 1925 Allchin 7NHP Tractor Engine was the first in the Machtbox Models of Yesteryear Series.
This Model was build from 1956 until 1694.
There are slight variations in the build:
The main body is always green, but the wheels can be either Dark Red or Bright Red (See Image)
The Kettle Door however can be Copper, Gold or Silver.
As for the Wheels, then can be diagonal threaded or have a smooth surface.