| Present Location | Dean Forest Railway |
| County Location | Gloucestershire |
| Designed For | GWR |
| Build Location | Swindon |
| Diagram number | O33 |
| Lot number | 1578 |
| Type | PMVG |
| First Number | 2790 |
| Later Numbers | 3303, 2790, TDW150027 |
| Present Number | W2790W |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | "Siphon G". Converted 1939 for CasEvac Train, and to Ambulance Train 33 in 1943. Generator Van for 1st WR Control Train in 1957-80. P 1986. 1999: undergoing extended restoration - partially polythene-sheeted. |
| Owner | Dean Forest Railway Company |
| External Structural Condition | Poor and Incomplete |
| Internal Structural Condition | Poor and Incomplete |
| Underframe Condition | Fair |
| External Finish | Poor and Incomplete |
| Internal Finish | Poor and Incomplete |
| Degree of External Originality | As left Departmental service |
| Degree of Internal Originality | As left Departmental service |
| Degree of Underframe/Running Gear Originality | As left Departmental service |
| Degree of External Authenticity | Good |
| Degree of Internal Authenticity | Fair |
| Degree of Underframe Authenticity | Very Good |
| Rarity | Several |
| Historical Importance | Some Interest |
| Operating | No |
| Survey Date | 17/06/1999 |
| Surveyor | Jackie Cope |
| Photo Date | 01/05/2021 |
| Photo by | Andrew Jenkins |
| At Risk | No |
| Date Record Last Updated | 09/03/2024 |
