| Present Location | Llangollen |
| County Location | Denbighshire |
| Designed For | BR |
| Built by | BRCW |
| Diagram number | 556 |
| Lot number | 30293 |
| Type | DMBS |
| First Number | 50454 |
| Later Numbers | M50454 53454 |
| Present Number | M50454 |
| Current Livery | BR Rail Blue |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | Dgm DQ205. Class 104. P 1993. Fully restored 1994 to BR green livery. In service, paired with DMCL 50528 (qv). Some repanelling in progress 06/00. By 06/17 in BR Rail Blue with 'Bournemouth Blue' moquette (see second additional photo below). |
| External Structural Condition | Fair |
| Internal Structural Condition | Good |
| Underframe Condition | Good |
| External Finish | Fair |
| Internal Finish | Good |
| Degree of External Originality | As built/last Passenger rebuild (BR or before) |
| Degree of Internal Originality | Some replaced/reproduced material |
| Degree of Underframe/Running Gear Originality | Some replaced/reproduced material |
| Degree of External Authenticity | Very Good |
| Degree of Internal Authenticity | Very Good |
| Degree of Underframe Authenticity | Very Good |
| Rarity | Several |
| Historical Importance | Some Interest |
| Storage | Secure Open |
| Operating | Yes |
| Survey Date | 11/10/2003 |
| Surveyor | Kevin Stroud |
| Photo Date | 18/05/2018 |
| Photo by | Steve West |
| At Risk | No |
| Date Record Last Updated | 26/02/2019 |
