Watch List notes:

SPAIN, Aragon. Ferdinand II the Catholic, 1479-1516. Ducat (Gold, 22 mm, 3.45 g, 6 h), Barcelona. FERDINANDVS•D: G: REX Crowned and draped bust of Ferdinand II to right; behind head, shield bearing the arms of Leon. Rev. CASTELLE: ET: ARA: COMES: B Crowned coat of arms, flanked by B-B. Calicó 41. Friedberg 32. Slightly doubled, otherwise, good very fine.