Vehicle details
| Registration | XWO172J | 
| Fleet no | RD271 | 
| Date new | 4/71 | 
| Chassis | RELH-4 Series 2 | 
| Wheelbase (feet - ins) | 18-6 | 
| Chassis no | 4-339 | 
| Body manufacturer | ECW | 
| Style | Series 2 RELH Dual purpose BET curved windscreen | 
| Seats | 49 | 
| Body no | 19591 | 
| Engine | Leyland 680 | 
| Cylinders (no) | 6 | 
| Engine capacity | 11.1 litre | 
| Depot (Period 8-1975) | Brynmawr | 
| Fleet no 1975 | RD5371 | 
| Fleet no 1983 | RD1360 | 
| NBC livery date | 4/73 | 
| Withdrawn | by 7/84 | 
| Notes |