| Added by |
 Steve
|
| Face value | 20 Pence |
| Catalog code (Michel) | GB 1777C |
| Catalog code (Scott) | GB 1839 |
| Catalog code | Yvert et Tellier GB 2066 Stanley Gibbons GB 2069 AFA number GB 1947 Unificato GB 2050 |
| Series | Millennium Inventions |
| Place in series | 1 |
| Stamp colour | Multicoloured |
| Watermark | None |
| Stamp use | Commemorative stamp |
| Issue date | 12/01/1999 |
| Designer | David Gentleman |
| Paper type | 1 centre phosphor band |
| Print technique | photogravure |
| Printed by | De La Rue Security Print |
| Perforation | 14 x 14½ |
| Height | 35.00 mm |
| Width | 37.00 mm |
| Catalog prices | Used stamp $0.40 Unused stamp $1.05 |
