| Owner: | Union Pacific Railroad Company |
| Type: | MofW Equipment |
| AAR Class: | PB: A car constructed for passenger train service and equipped to handle baggage, express, mail, merchandise or similar products. |
| AAR Type: | M510 |
| Detail Info: | Misc Cars |
| User Notes: | Ex-express #24439, nee-postal storage #5708, AC&F, Lot #3026, 1949/70 |