| Added by |
 Steve
|
| Face value | 12 |
| Catalog code (Michel) | GB-S 29 |
| Catalog code (Scott) | GB-S MH17 |
| Catalog code | Yvert et Tellier GB 941 Stanley Gibbons GB S33 AFA number GB 909 Unificato GB 941 |
| Series | Machin |
| Stamp colour | Yellow Green |
| Watermark | None |
| Stamp use | Definitive stamp |
| Issue date | 23/07/1980 |
| Designer | Arnold Machin / Jeffrey Matthews |
| Paper type | phosphorised |
| Print technique | photogravure |
| Printed by | Harrison & Sons Ltd. |
| Perforation | comb 14¾ x 14¼ |
| Height | 24.00 mm |
| Width | 20.00 mm |
| Catalog prices | Used stamp $0.55 Unused stamp $0.55 |
