Watch List notes:

Livorno, Cosimo III de Medici (1670-1723), Mezzo Tollero, 1723 ; AR (g 13,34; mm 38; h 6); COSIMO III D G MAG DVX ETRVRIAE VI, bust of Cosimo III r., Rv. PRAESIDIVM ET DECVS, ship r., below LIBVRNI, 1623. CNI 18; Galeotti 50/1.
Very rare. Old cabinet tone. About extremely fine