Watch List notes:

Tristan da Cunha Five Pounds 2008 Matt Proof struck in Palladium and weighing 31.1 grammes, Reverse Britannia facing slightly to left, in the field a series of landmark dates on which Britannia has appeared on British coins, FDC in the box of issue with certificate, issue limited to just 100 pieces

Estimate: 425-525 GBP