Watch List notes:

Proof Set 2012 The Diamond Jubilee Silver Proof Set (7 coins) comprising Five Pound Crown, Fifty Pence, Twenty Pence, Ten Pence Five Pence, Two Pence and One Penny all struck in silver, S.PSS56 nFDC to FDC retaining practically full mint brilliance, in the Royal mint box of issue with certificate, only 587 sets issued

Estimate: 100-150 GBP