Prototype: Consolidated Rail Co. (Conrail) class GG-1 heavy general-purpose locomotive. 4-6-6-4 wheel arrangement. Special Bicentennial version.

Model: The locomotive comes with both power trucks mounted so that they pivot, and all of driving axles are powered. The couplers swing out with the pilot trucks. American design pantographs with increased extension. The headlights are maintenance-free LED's.

Trucks are black on the model, not silver as shown in the picture.

The minimum radius for operation is 195 mm / 7-11/16". Length over the couplers 115 mm / 4-1/2".

One-time series for the anniversary "25 years of Märklin, Inc.".