| Present Location | Carnforth |
| County Location | Lancashire |
| Designed For | BR |
| Build Location | Derby |
| Built by | BR |
| Diagram number | 185 |
| Lot number | 30757 |
| Type | BSO |
| First Number | 9401 |
| Later Numbers | S9401 |
| Present Number | 9104 |
| Current Livery | West Coast Railways maroon |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | Mk 2. P 1990. B4 bogies. Built for LM Region. Luggage cage removed. Converted to BSO(T) micro buffet by BR - trolley bay re-converted to seating by MHR. SR Green livery. After repair at Ramparts Derby, was based at Carnforth as part of 'Green Train'. West Coast Railways maroon livery by 04/14. 10/21: seen carrying number 9104. |
| External Structural Condition | Very Good |
| Internal Structural Condition | Very Good |
| Underframe Condition | Very Good |
| External Finish | Very Good |
| Internal Finish | Very 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 | Good |
| Degree of Underframe Authenticity | Very Good |
| Rarity | Many |
| Historical Importance | no Immediate Importance/Not Applicable |
| Storage | Secure Open |
| Operating | Yes |
| Survey Date | 26/07/2008 |
| Surveyor | Kevin Stroud |
| Photo Date | 09/12/2018 |
| Photo by | Steve West |
| At Risk | No |
| Date Record Last Updated | 01/11/2021 |
