Watch List notes:

Countdown to the London Olympic Games, a 4-coin set in gold, Five Pound Crowns (4) 2009 3-Year Countdown Gold Proof S.4920, 2010 2-Year Countdown S.4921, 2011 One Year Countdown S.4922 and 2012 Olympic Games S.4923 all Gold Proofs with the blue Olympic logo on the reverses, in NGC holders, in the long Royal Mint box of issue with certificate

Estimate: 6000-7000 GBP