Alco S1 - Standard DC - Master(R) Silver -- Reading #53 (dark green, gold)

Produced concurrently with the S-2, these units were rated at 660 horsepower and rode on Blunt trucks. These detailed switchers feature a five-pole skewed-armature motor and dual flywheels for reliability, AccuMate knuckle couplers and a diecast chassis. Perfect for post-40s layouts.