*MRC Throttle Pack Model 501 HO Hobby Train Transformer By Model Rectifier Corp

MRC Model 501 Throttlepack DC Transformer DOES NOT WORK

MRC Throttle Pack HO Hobby Transformer Model 3 Model Rectifier Corp.

MRC Throttlepack Model 501 HO Train Transformer Controller USA Parts Repair

c1970s Throttlepack HO Train Transformer Model 501 Model Rectifier Edison NJ

MRC Model 501 and 500 Pair Throttlepack Hobby Transformer

MRC Throttlepack HO Model Train Control 501

MRC - THROTTLEPACK TRANSFORMER MODEL #501