Watch List notes:

Halfcrown 1687 First Bust 6 over 8 ESC 499A Fine, Extremely rare, rated R4 by ESC, (11-20 examples believed to exist) this the finest of only 3 examples we have offered in 14 years, Ex-Croydon Coin Auction 4/6/2013 Lot 670

Estimate: 500-600 GBP