1979 - (F054)(FDI). In a good fine used condition. The 'cancel' may be in a slightly different position bar the one's shown in the scan, there will Hardly be any difference but just as good as the one's shown.
SG#2806-2811. Buy it Now: £1.85 p. (Cat price for the set is £8 ref Stanley Gibbons Concise Catalogue, 2017). Standard Letter up to 100g. Condition / Grade: Good used examples (Grade B). Standard Letter up to 20g.