Watch List notes:

Italy, Firenze, Cosimo I de Medici (1536-1574), Testone, 1536-1574; AR (g 9,25; mm 30; h 3); COSMVS MED FLOREN ET SENARVM DVX II, cuirassed bust r., Rv. S IOANNES BAPTISTA, the Saint seated facing, sligthly r., holding cross. CNI 211/20; MIR 149.
Rare, old cabinet tone, minor falling of die, extremely fine.