These Royal Mail stamps were affixed to specially designed envelopes and postmarked on the first day that the stamps were issued.
11.04.1989 | Margaret Thatcher 10 Years at No. 10, Postmarked at London ECBUY NOW £65
19p Public Education
19p Direct Elections to European Parliament
35p Postal, Telegraph and Telephone Congress
35p Inter-parliamentary Union Conference
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Presentation Pack (198)
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