It was found on railroads from East to West and North to South. The F7 was the fourth model in GM-EMD's highly successful F-unit series, and was for a long time (until the introduction of the EMD SD40-2 freight unit) was the best selling Diesel-electric locomotive ever made.
This item includes two individually powered DCC-friendly Baltimore & Ohio F unit locomotives (one A and one B) with Freight details: Road numbers #4503 + #5493
 
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