* Prototypes in Service 1940 thru 1950s
 
* Heavy Die Cast Metal Chassis
 
* Factory-Installed 8-Pin DCC Harness
 
* 14:1 Gear Ratio
 
* Helical-Cut Gears for Quiet Operation & Easy Multiple Unit Operation
 
* Five-Pole Skew-Wound Motor
 
* All-Wheel Drive & Electrical Pickup
 
* Dual Machined Brass Flywheels
 
* RP-25 Metal Wheels
 
* Constant & Directional Lights
 
* Proto MAX(TM) Metal Knuckle Couplers