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| Catalog No. | 33522 (522) | ||
| Category | Box Car | ||
| Description | Boston & Maine | ||
| Catalog References at myflyertrains.net | 1957 | 1958 | 1959 |
| 1960 | |||
| Remarks |
Although this car was never cataloged as a 522, some examples were lettered with the 3 digit number. In the 522 lettered car, thin steps were the norm. Presumably the thick step 522 versions were a transitional variation leading up to the 33522. |
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 Thick Step Variation on 522 - Dom San Giovanni Collection |
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