| Owner: | General American Marks Company |
| Type: | Box Car |
| AAR Class: | XM: Box car for general service equipped with side or side and end doors. |
| AAR Type: | B637 |
| Detail Info: | Unequipped Box Car, Inside Length: 69' to 79', cushion draft gear/underframe, Plug door, inside width 9ft 6in and over, Door opening 15ft and over |
| Plate: | G |
| Dry Capacity: | 7580 |
| User Notes: | ex-AOK 112290 {will be NKCR 66554} |
