Watch List notes:

Tristan da Cunha a 3-coin set 2011 Battle of Britain 70th Anniversary Set comprising Gold Crowns (3) depicting Douglas Bader, Keith Park and an aerial scene from the Battle of Britain Gold Proof Piedforts, set number 001 of just 100 sets issued FDC in the London Mint Office box of issued with certificate

Estimate: 210-270 GBP