* 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