| Added by |  Alain Martineau | 
| General Description : | Color: Olive sepia The first Machins were issued in 1967 and were in use until the UK changed to a decimal currency in 1971. These Machins came in two sizes, with the four higher value stamps being the largest. | 
| Face value | 4 Pence | 
| Catalog code (Michel) | GB 456 | 
| Catalog code (Scott) | GB MH6 | 
| Catalog code | Yvert et Tellier GB 475 Stanley Gibbons GB 731 AFA number GB 456 Unificato GB 475d | 
| Series | Machin | 
| Stamp colour | Black | 
| Watermark | Don’t know | 
| Stamp use | Definitive stamp | 
| Issue date | 05/06/1967 | 
| Designer | Machin | 
| Paper type | OCP | 
| Print technique | Photogravure | 
| Printed by | Harrison and Son Ltd | 
| Perforation | 15 X 14 | 
| Height | 24.00 mm | 
| Width | 21.00 mm | 
| Catalog prices | No catalog prices set yet |