Florence Baptistery
He was the son of Antonio, and grandson of Tommaso Finiguerra or Finiguerri, both goldsmiths of Florence, and was born in Santa Lucia d'Ognissanti in 1426. He worked with his family as a goldsmith and was early distinguished for his work in niello. In 1449, there is a note of a sulfur cast from a niello of his workmanship being handed over by the painter Alessio Baldovinetti to a customer in payment or exchange for a dagger. In 1452 Maso delivered and was paid for a niellated silver pax commissioned for the Florence Baptistery by the Arte di Calimala or cloth merchant's guild.