Fifty Pences (2) 2004 50th Anniversary of the first 4-minute mile Silver Proof Piedfort, S.H13, a hint of toning, otherwise FDC, in the Royal Mint box of issue with certificate, 2016 Olympic Team GB S.H47 Silver Proof Piedfort FDC in the Royal Mint box of issue with certificate and booklet
Estimate: 50-70 GBP