This white marble statue, attributed to Nanni di Banco and dated around 1404-1409, depicts a young adolescent, smaller than life-size, traditionally identified as a prophet. It comes from the right pinnacle of the tympanum of the Porta della Mandorla, on the north side of the Cathedral, where it was paired with a similar statue attributed to Donatello. Together, both were part of the Marian-themed iconographic program of the portal’s decoration. The statue portrays a young man with a full, oval face, large eyes, a small nose, tightly closed lips, and hair gathered high. He wears a shirt cinched at the waist with a belt and a tunic that drapes widely over his legs, reaching his bare feet. The figure is depicted in a standing pose, balanced on his left leg, with his left hand resting at his side and his right hand holding a small unrolled scroll. The attribution to Nanni di Banco is almost unanimous: a youthful and less talented companion of Donatello, he was responsible for various elements of the portal, including the large tympanum relief depicting the Assumption of Mary. The iconographic identification as a prophet is supported by his ancient-style attire, bare feet, and the open scroll with prophecies in his right hand. However, his exact identity remains uncertain, as does the reason for his youthful appearance. The presence of two prophets flanking the Assumption of Mary aligns perfectly with iconographic tradition: prophets and sibyls were often placed in these complementary positions relative to narratives of Mary and Christ, as Christian tradition reinterpreted their prophecies in the light of the New Testament.