Watch List notes:

Elizabeth II (1952-), silver 13-coin proof set, 2006, struck to celebrate the Queen's 80th Birthday, comprising Five Pounds, Bimetallic Two Pounds, Northern Ireland One Pound, circulation Fifty Pence, Twenty Pence, Ten Pence, Five Pence, Two Pence, One Penny, and Maundy Fourpence, Threepence, Two Pence, and Penny (S.PSS17). All as struck in original Royal Mint display case, accompanied by outer packing and certificate of authenticity.

Maximum issue of 8,000 sets.
Estimate: £300-500