Watch List notes:

Napoli, Ferdinando I d'Aragona (1458-1494), Ducato, c. 1458-1494; AV (g 3,47; mm 21; h 9); FERDINANDVS D G R SIV, crowned coat, Rv. . + RECORDAT MISERICORDIE S, crowned bust of king r.; at l., C. P/R 9a; MIR 64/6.
Rare, about extremely fine.