| Present Location | Pontypool Blaenavon |
| Designed For | BR |
| Build Location | Derby |
| Built by | BR |
| Diagram number | 634 |
| Lot number | 30601 |
| Type | DMBS |
| First Number | 51942 |
| Present Number | 51942 |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | Class 108. P 1994. Very minor damage to front end; otherwise appears complete and intact. Standing on pads on tarmac - not on rails: but now (2/08) planned to be railed. Forms set with 56270. |
| Owner | Gwent 108 Group |
| External Structural Condition | Good |
| Internal Structural Condition | Good |
| Underframe Condition | Good |
| External Finish | Satisfactory |
| Internal Finish | Good |
| Degree of External Originality | As built/last Passenger rebuild (BR or before) |
| Degree of Internal Originality | As built/last Passenger rebuild (BR or before) |
| Degree of Underframe/Running Gear Originality | As built/last Passenger rebuild (BR or before) |
| Degree of External Authenticity | Very Good |
| Degree of Internal Authenticity | Very Good |
| Degree of Underframe Authenticity | Very Good |
| Rarity | Several |
| Historical Importance | of some Importance |
| Storage | Open |
| Operating | No |
| Survey Date | 25/07/1999 |
| Surveyor | Michael Cope |
| Photo Date | 01/06/2004 |
| Photo by | Byron Chamberlain |
| At Risk | No |