| Present Location | Didcot |
| County Location | Oxfordshire |
| Designed For | GWR |
| Build Location | Swindon |
| Diagram number | L23 |
| Lot number | 1666 |
| Type | BPOT |
| First Number | 814 |
| Later Numbers | TDB975156 |
| Present Number | 814 |
| Current Livery | GWR |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | P 1975 by GWS. Has travelled to the Nene Valley Railway for Travelling Post Office demonstrations.
04/19: in shed beside the carriage workshop. |
| Owner | Great Western Preservations Ltd and private owners |
| External Structural Condition | Very Good |
| Internal Structural Condition | Very Good |
| Underframe Condition | Very Good |
| External Finish | Very Good |
| Internal Finish | Good |
| Degree of External Originality | Much replaced/reproduced material |
| Degree of Internal Originality | Much 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 | Unique |
| Historical Importance | Exceptionally Important |
| Storage | Under Cover |
| Operating | Yes |
| Survey Date | 18/03/2000 |
| Surveyor | Trevor England |
| Photo Date | 07/06/2014 |
| Photo by | Geoff Clark |
| At Risk | No |
| Date Record Last Updated | 12/05/2019 |
