Machin definitive series
Also known as: Machin head
Well documentedSupported by multiple reputable specialist catalogues or publications.
Period
From 1967
Issuing entity
United KingdomA long-running British definitive stamp series showing a sculpted profile of the monarch against a plain background.
Historical context
One of the most extensively studied modern definitive series, with very large numbers of printing, perforation and paper varieties.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Catalogue numbers for individual values and printings must be transcribed from a verified edition
- Phosphor band and gum varieties need a specialist reference