| Present Location | North Norfolk |
| County Location | Norfolk |
| Designed For | BR |
| Built by | BRCW |
| Diagram number | 556 |
| Lot number | 30293 |
| Type | DMBS |
| First Number | 50479 |
| Later Numbers | M50479 53479 |
| Present Number | 50479 |
| Current Livery | BR multiple unit green livery |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | Class 104. P 1993 at Oswestry but by 24/10/99 with 50531 (qv) to Telford Horsehay. Completely repanelled internally 2001. By 11/20: moved from Telford Steam Railway to North Norfolk Railway. |
| External Structural Condition | Good |
| Internal Structural Condition | Fair |
| Underframe Condition | Good |
| External Finish | Good |
| Internal Finish | Poor but Substantially Complete |
| Degree of External Originality | As built/last Passenger rebuild (BR or before) |
| Degree of Internal Originality | As left Departmental service |
| Degree of Underframe/Running Gear Originality | As built/last Passenger rebuild (BR or before) |
| Degree of External Authenticity | Fair |
| Degree of Internal Authenticity | Good |
| Degree of Underframe Authenticity | Very Good |
| Rarity | Several |
| Historical Importance | no Immediate Importance/Not Applicable |
| Storage | Secure Open |
| Operating | No |
| Survey Date | 11/09/2006 |
| Surveyor | Evan Green-Hughes |
| Photo Date | 20/05/2018 |
| Photo by | Steve West |
| At Risk | No |
| Date Record Last Updated | 16/01/2021 |
