* Prototypes in Service 1940 through 1950s 
 
* Heavy Die Cast Chassis 
 
* Skew-Wound Armature Motor 
 
* 8-Wheel Drive & All-Wheel Electrical Pickup 
 
* Dual Machined Brass Flywheels 
 
* RP-25 Metal Wheels 
 
* Directional Lighting 
 
* Micro-Trains Rear Knuckle Coupler