Watch List notes:

Napoli, Ferdinando IV di Borbone (1759-1816), 6 Ducati, 1773; AV (g 8,86; mm 27; h 6); FERDINAN IV D G SICIL ET HIER REX, bust of king, below B⋅P, Rv. HISPANIAR INFANS, coronated coat; at sides CR C, below 6 D and 1773. P/R 21; MIR 357/4.
Rare. Extremely fine