Watch List notes:

Alderney £1,000 2010 Gold Proof (1,096 grams of 22 carat so contains 1 kilo of pure gold) stunning 100 mm diameter Rank Broadley Queen Elizabeth II portrait obverse, Battle of Britain 1940 reverse, cased FDC with certificates and plaque "Battle of Britain 70th Anniversary" issue limit of just 20, extremely rare thus and the first one we have seen

Estimate: 35000-45000 GBP