Vehicle details
| Registration | OWO308M |
| Fleet no | RC674 |
| Date new | 6/74 |
| Chassis | RELH-4 Series 2 |
| Wheelbase (feet - ins) | 18-6 |
| Chassis no | 4-669 |
| Body manufacturer | ECW |
| Style | Series 2 coach |
| Seats | 47 |
| Body no | 21466 |
| Engine | Leyland 680 |
| Cylinders (no) | 6 |
| Engine capacity | 11.1 litre |
| Depot (Period 8-1975) | Tredegar |
| Fleet no 1975 | RC2574 |
| Fleet no 1983 | RD1141 |
| NBC livery date | Delivered |
| Withdrawn | After 7/84 |
| Notes |