Description
18 June 1953 – Margate Kent
Doubled slogan with ‘British Industries Fair 27 Apl – 8 May 1953 London & Birmingham’ – GS 197. Re Late use as published use was between 16 January and 7 May 1953
Another explanation that this was a double used envelope, firstly having the Fairs slogan and then reused with the stamp covering an earlier town date die.