| Added by |
 Steve
|
| Face value | 11 1/2p |
| Catalog code (Michel) | GB-S 32 |
| Catalog code (Scott) | GB-S MH16 |
| Catalog code | Yvert et Tellier GB 980 Stanley Gibbons GB S36 Unificato GB 980 |
| Series | Machin |
| Stamp colour | Grey Brown |
| Watermark | None |
| Stamp use | Definitive stamp |
| Issue date | 08/04/1981 |
| Designer | Arnold Machin / Jeffrey Matthews |
| Paper type | 1 phosphor left side band |
| Print technique | Offset lithography |
| Printed by | John Waddington Security Print Ltd. |
| Perforation | comb 13½ x 14 |
| Height | 24.00 mm |
| Width | 20.00 mm |
| Catalog prices | Used stamp $0.90 Unused stamp $1.00 |
