Märklin HO Union Pacific (UP) "Big Boy" heavy steam freight locomotive #4014
- One-time series of the "Big Boy", road number 4014, with oil firing, put back into operation by Union Pacific in the prototype.
- Prototypical execution of the model.
- The most accurate UP Excursion #4014 Big Boy ever produced in HO scale!
This locomotive has been designed primarily for use with Märklin C-rails and K-rails.
NOTE: You cannot use a Marklin locomotives on regular 2-rail track.