List of Machin stamps
This is a list of all the major variations of the Machin series of postage stamps in the United Kingdom. The complete list of all variations is vast and outside the scope of this encyclopedia.
Note: the colours and the colour descriptions are to be used to give an idea only, as each catalogue and website will name the colours differently.
Pre-decimal issues
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.Small Size ()
| Value & Colour | Date first issued |
| d orange brown | Feb 5 1968 |
| 1d yellow & ochre | Feb 5 1968 |
| 2d lake brown | Feb 5 1968 |
| 3d spectrum violet | Aug 8 1967 |
| 4d olive sepia | Jun 5 1967 |
| 4d vermilion | Jan 6 1969 |
| 5d stewart blue | Jul 1 1968 |
| 6d purple | Feb 5 1968 |
| 7d light green | Jul 1 1968 |
| 8d scarlet | Jul 1 1968 |
| 8d duck egg blue | Jan 6 1969 |
| 9d winchester green | Aug 8 1967 |
| 10d light olive brown | Jul 1 1968 |
| 1/- aconite violet | Jun 5 1967 |
| 1/6 turquoise & garter blue | Aug 8 1967 |
| 1/9 orange & olive brown | Jun 5 1967 |
Large Size
| Value & Colour | Date first issued |
| 2/6 peat brown | Mar 5 1969 |
| 5/- raspberry red | Mar 5 1969 |
| 10/- deep ultramarine | Mar 5 1969 |
| £1 bluish black | Mar 5 1969 |
Decimal issues
The decimal Machins have been issued throughout Britain's period of decimalisation, and continue to be produced today. During the 1970s and 1980s, the Royal Mail issued 12 Machins in a larger format. Other major variations include:Small size ()
Large size ()
| Value & Colour | Date 1st Issue |
| 10p cerise | Jun 17 1970 |
| 20p olive green | Jun 17 1970 |
| 50p deep ultramarine | Jun 17 1970 |
| £1 bluish black | Jun 17 1970 |
| £1 olive & greenish yellow | Feb 2 1977 |
| £1.30 buff & blue-green | Aug 3 1983 |
| £1.33 mauve & blue-black | Aug 28 1984 |
| £1.41 buff & blue-green | Sep 17 1985 |
| £1.50 blue-black & lilac | Sep 2 1986 |
| £1.60 blue-black & buff | Sep 15 1987 |
| £2 purple-brown and pale green | Feb 2 1977 |
| £5 royal blue & pale pink | Feb 2 1977 |
NVI (non-value indicator) issues
NVI Machins first appeared in 1989 in an attempt to negate the need to keep issuing new stamps after each postal rate change. They are marked 1st and 2nd for the two classes of post in the United Kingdom. The E NVI stamp represented the standard letter rate to Europe.Small size ()
| Value & Colour | Date 1st Issue | Elliptical Perf. | EME Image | Regional Issue |
| 1st black | Aug 22 1989 | |||
| 1st flame | Aug 7 1990 | Apr 6 1993 | Apr 29 1997 | Feb 15 2000    |
| 1st gold | Apr 21 1997 | Apr 21 1997 | ||
| 1st Millennium white | Jan 6 2000 | Jan 6 2000 | ||
| 1st gold | Aug 1 2006 | Aug 1 2006 | ||
| 2nd light blue | Aug 22 1989 | Apr 6 1993 | Apr 29 1997 | |
| 2nd dark blue | Aug 7 1990 | |||
| 2nd light blue | Aug 1 2006 | Aug 1 2006 | ||
| E dark blue | Jan 19 1999 | Jan 19 1999 |
Horizontal issues
| Value & Colour | Date 1st Issue | Elliptical Perf. | EME Image |
| 1st gold | Aug 1 2006 | Aug 1 2006 | |
| 2nd light blue | Aug 1 2006 | Aug 1 2006 |
Large size ()
| Value & Colour | Date 1st Issue |
| 1st embossed | Feb 16 1999 |
| 1st engraved | Feb 16 1999 |
| 1st typographed | Feb 16 1999 |
Penny Black anniversary issues
In 1990, the Royal Mail issued 5 stamps to commemorate the 150th anniversary of the Penny Black. It featured the machin image of Queen Elizabeth II overlaying the image of Queen Victoria from the Penny Black. An NVI issue was released in 2000.Small size ()
| Value & Colour | Date 1st Issue |
| 15p light blue | Jan 10 1990 |
| 20p black & cream | Jan 10 1990 |
| 20p black | Apr 17 1990 |
| 29p purple | Jan 10 1990 |
| 34p slate blue | Jan 10 1990 |
| 37p red | Jan 10 1990 |
| 1st black | Feb 15 2000 |