| Present Location | East Lancashire |
| County Location | Greater Manchester |
| Designed For | BR |
| Build Location | Wolverton |
| Built by | BR |
| Diagram number | 443 |
| Lot number | 30478 |
| Type | DTSO |
| First Number | 77172 |
| Present Number | 77172 |
| Current Livery | BR multiple unit green livery |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | 1200 v (protected third-rail) Class 504 EMU ex Manchester/Bury line. P 1991 by 504 Grow condition oup. Paired with M65451 (qv). OOU at Buckley Wells. Painted one side dark green, one side all blue. By 7/10: to Baron Street sidings. By 10/16: under restoration at Buckley Wells. 09/18: photos above and below show latest condition following exterior body work and painting. |
| Owner | Class 504 Preservation Society |
| External Structural Condition | Satisfactory |
| Internal Structural Condition | Good |
| Underframe Condition | Good |
| External Finish | Very Good |
| Internal Finish | Satisfactory |
| 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 | Unique |
| Historical Importance | Some Interest |
| Storage | Secure Open |
| Operating | No |
| Survey Date | 29/08/2006 |
| Surveyor | Kevin Stroud |
| Photo Date | 20/09/2018 |
| Photo by | Simon Thomas |
| At Risk | No |
| Date Record Last Updated | 14/12/2018 |
