Covid Heroes, NHS 75th anniversary double

Heroes of the Covid Pandemic first day cover produced in aid of NSPCC, ChildLine. This cover features the full-set of eight new stamps, chosen as winners by HRH The Prince Charles as part of the Royal Mail stamp design competition. London EC2A postmark (where NSPCC is based) 23.03.2022. Doubled on 5th July 2023, with single Union Flag stamp and Manchester running postmark to celebrate the 75th anniversary of the National Healthcare System (NHS).