Watch List notes:

Elizabeth II, Gold Proof £100 (1oz) Britannia 1987, obv. Maklouf bust, rev. Britannia standing looking left, design by Philip Nathan, limited edition no. 1208 of 2500, encapsulated in Royal Mint case of issue with certificate of authenticity, FDC.
(Estimate: 1000 - 1300 GBP)