Alco S3
Essentially an S1 with AAR type A trucks.Data
| Years Produced: | 1950-1957 |
| Number Produced: | 290 |
| Engine Type: | McIntosh&Seymour 539 |
| Horse Power: | 660 |
Example
Photo credit: Ken Wirsing
Conrail PC no.9476, Buckeye Yard Ohio, May 1977
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