Other then the fact they were destroyed...unlike the remaining 3, they were painted differently, which we needed to find out for adding them to Trainz
Smokebox and firebox were painted black, and diagonal number boards seem to have been removed. A apparently wooden winter cover was built to protect the coal from the elements (some one on the board pointed this out to me).
Snow plows, as far as I can tell, were on almost all the time, so we modified the coupler point so that they worked properly on the plow. And unlike the engines in Colorado, they were very dirty, most of the pictures I have seen show the side and connecting rods as black, so they were covered in dirt and grime