Watch List notes:

WORLD COINS, Italy, Ferrara, Alfonso I d'Este (1503-1534), Gold Doppio Ducato, bearded bust right, rev Christ and the Pharisee, 6.85g (Belesia 9a/c; Ravegnani Morosini 2; MIR 268; F 268). Some light wear, good very fine for issue with an attractive toning, exceedingly rare.
ex NAC auction 76, 10 December 2013, lot 49

Estimate: £25,000-30,000