| Added by |
 Steve
|
| Face value | 7 1/2 Pence |
| Catalog code (Michel) | GB-NI 17 |
| Catalog code (Scott) | GB-NI MH9 |
| Catalog code | Yvert et Tellier GB 637 Stanley Gibbons GB NI23 AFA number GB 604 Unificato GB 637 |
| Series | Machin |
| Stamp colour | Chestnut |
| Watermark | None |
| Stamp use | Definitive stamp |
| Issue date | 07/07/1971 |
| Designer | Arnold Machin / Jeffrey Matthews |
| Paper type | 2 phosphor bands |
| Print technique | photogravure |
| Printed by | Harrison & Sons Ltd. |
| Perforation | comb 15 x 14 |
| Height | 24.00 mm |
| Width | 21.00 mm |
| Catalog prices | Used stamp $2.00 Unused stamp $2.25 |
