The Machin portrait used on the definitive stamps from 1964 was also used on postal stationery including Envelopes, Postcards, Letter Cards, and Air Letters or Aerogrammes.
Whilst some products continued into the 21st century, Letter Cards were discontinued in 1982 and were replaced by Postnotes. These were in a similar format to Air Letters but are printed on cream laid paper with text in shades of brown, and two phosphor bands (which are visible in this picture). They were valid up to 60g (although now they would be valid up to 100g).
I don't know the selling price but the postage rate at the time was 15½p, which rose to 16p in April.
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Address panel of basic Postnote
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The unfolded size is A4, 210 x 297 mm (excluding the flaps)
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1. Unfolded Postnote with text* - a 'Royal Mail' product
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I don't know whether Postnotes were sold singly, but they were definitely sold in packs of 5.
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2. Pack of 5 Postnotes - front 1982
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| Pack of 5 Postnotes - back 1982 |
A well-known variation to the Postnotes were those sold in a promotion with the Milk Marketing Board (MMB). There's an article about them here. Buying fresh cream in pots would enable you to buy a pack of 7 special Postnotes for 84p (12p each) if you sent in two cleaned foil tops!
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Unfolded Dairy Postnote with inscription at foot Post notes: a 'Royal Mail' product
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The four different 'Dairy' designs on Postnotes - Strawberries, Church, Farm, Milk Churn (my identification names).
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3. Dairy Postnotes pack of 7 - 2 each of 3 designs plus one other, 1983.
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Dairy Postnotes pack of 7 with small Fresh Cream Recipe Book and Film Processing envelope.
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The Welsh aspect
There were three other variants of the Postnotes, all apparently available from some Post Offices in Wales. Two showed buildings in Cardiff - Cardiff Castle and City Hall - while the third promoted the Llangollen International Music Eisteddfod. The exact status of these is uncertain.
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4. Postnote promotoing the Llangollen International Music Eisteddfod. The internal inscription on this one is Postnotes: a 'Royal Mail' Product with Postnotes all one word, and Product capitalised.
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For Sale
1. Single original Postnote - £2.00
2. Pack of 5 original Postnotes (opened) - £9.00
3. Pack of 7 Dairy Postnotes (opened but with additions) - £25.00
3a. Single Dairy Postnote. These designs only: Strawberries, Church and Farm - £3.50 each
3b. Dairy Postnote (Farm) with BPF 68th Congress Norwich 1986 (see below) - £1.50
4. Eisteddfod Postnote - £5.00
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3b Dairy 'Farm' Postnote with 1986 British Philatelic Federation 68th Congress Norwich postmark.
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UPDATE 4 August 2025. I found some more Postnotes including this one given away by the magazine Woman's Realm by which the price was 21p (or £1 for a pack of 5). [Corrected typo; thanks M&M]
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| Postnote given away by the magazine Woman's Realm - date uncertain. |
UPDATE 9 September 2025
Thanks to JW for sending this example of a Postnote properly used in 1999, sent to Edinburgh's best stamp shop, Robert Murray.
I wrote earlier that the Postnotes were based on Air Letters or Aerogrammes. These were printed on light-weight blue paper in various shades.
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Example of 5p Air Letter illustrated with the VC-10 Jet Airliner
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The Air Letter had been introduced into the Iraqi postal service in 1933 by the then
Inspector General of Posts and Telegraphs, Major Douglas William Gumbley
CBE DSO Royal Engineers. The original form, on thin paper sized 124 mm x
99 mm, greyish in colour, with bluelined framing and with the
designation legend on the front. It had an embossed effigy of Faisal I of Iraq and was printed by Bradbury Wilkinson.Lieutenant Colonel R. E. Evans, Royal Engineers,
Assistant Director Army Postal Service Middle East Force (MEF),
proposed that a lightweight self-sealing letter card that weighed only
1/10 oz (2.8 g) be adopted by the British Army for air mail.
The private nature of the air letter ensured its popularity among its
users and that popularity, with its lightness, brought about its
continued use as the civilian air letter (aerogramme). The aerogramme cost 6d to send anywhere in the world from 1943 to 1966, increasing to 9d until 1971. (Wikipedia)
Normal aerogrammes sold by the Post Office were prepaid postal stationery, but private forms (approved by the PO) with postage paid by adhesive stamps were acceptable. No enclosures were permitted in either.
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1948 Olympic Games 6d stamp imprint on Air Letter
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The King George VI issues used a 6d purple printed stamp and the 6d Olympic Games stamp in 1948. The first of the new reign used the design of the 2½d Coronation stamp revalued six pence in deep red in 1953. The first definitive design showed the Houses of Parliament and was issued in 1954. Various other imprinted stamps were used, including Christmas, and the long-running VC-10 stamp shown above spanned the conversion to decimalisation, being issued in 9d, 4p, 5p, 6p, 8½p and 10½p values until 1974.
The Machin head was introduced in 1972 as a 6½p value. NVI 'stamps' were introduced in 1989. The last Air Letter was issued in 2007 but they remain valid for postage. By themselves as Air Letters they would need additional stamps, but the NVI ones remain valid at the current international airmail rate of £2.20.
There is no Air Letter service now: I asked in my post office what would happen if inserts, such as extra pages or a postcard, were included and I was told that the NVI (= £2.20) Air Letters would be valid up to 100g.
Small-format Air Letters as the VC-10 are 150 x 316 mm (excluding flaps), but the 1972 Machin design was the first in 'A4' size, 209 x 294-8 mm. The final cost in 2011 was 85p according to the Great Britain Philatelic Society website.
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1972 6½p value A4 aerogramme
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1993 50th Anniversary NVI Postage Paid aerogramme.
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The postal stationery catalogue Collect British Postal Stationery records 150 different special issues including this pictorial one issued in 1979 for the Golf Open Championship.
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1979 Golf Open Championship aerogramme partly captioned in Gaelic.
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I have a number of Air Letters/Aerogrammes for sale, NVIs at less than the new (October '25) postage rate of £2.50 £3.40! Please ask for details or let me know which ones you are interested in.