Watch List notes:

One Thousand Pounds 2017 The Platinum (70th) Wedding Anniversary of Queen Elizabeth II and Prince Philip, One Kilo of .999 Gold Proof S.S8 FDC, 100mm diameter, FDC. The only use of the conjoined portraits in the One Thousand Pound gold series. An hugely impressive and imposing piece, number 14 of only 31 issued of this type. Comes in the Royal Mint box of issue with certificate and booklet. The One Thousand Pound coins are flagship pieces and provide a centrepiece to any advanced modern gold collection

Estimate: 55000-65000 GBP