Watch List notes:

USA Half Dollar 2014 John F.Kennedy 50th Anniversary First Strike Gold Proof PCGS PR70DCAM, Cataloguers note: the first coins issued were eagerly awaited and dealers were paying people $500 to queue for the coins from midnight on day of release, the first off the press was reported by Coin News to have changed hands for $100,000

Estimate: 475-600 GBP