This 1998 NHS 50th anniversary 50p pence coin cover is a first day cover by Mercury Covers. It commemorates the 50 years service of NHS and hosts a brilliant uncirculated 50p pence coin with inscriptions NHS Fiftieth Anniversary and four Royal Mail commemorative stamps each with a Health theme. Cancelled postmark 50th Anniversary of the NHS Tredegar Monmouthshire 23rd June 1998.