First day cover 

18 April 2023 tbs.pm/78673

Post Office First Day Cover: BBC & Broadcasting History. Four stamps: 3p with microphones, 5p with a horn loudspeaker, 7½p with a colour TV camera, 9p with Marconi experiments. Postmarked FIRST DAY OF ISSUE - LONDON, W.C - 13 SEP 1972

 

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Liverpool, Wednesday 10 April 2024