This piece is framed at the top by a semicircular arch under a central gable with a relief of the torso of a robed man touching his hands to his chest.  The marble relief below this sculpture group shows the construction of a spiral column on the left and a nude cherub on the right in a workshop scene depicting its main subjects in action.  This sculpture group shows a set of Romanesque-figured men in togas somberly facing each other inside a semicircular niche, and was commissioned by a guild of stone and woodworkers in homage to a group of artists executed for refusing to build a statue of Asclepius for Diocletian.  Located along with works by Ghiberti and Donatello in Florence's Or San Michele, this is, FTP, what sculpture group depictin
This piece is framed at the top by a semicircular arch under a central gable with a relief of the torso of a robed man touching his hands to his chest.  The marble relief below this sculpture group shows the construction of a spiral column on the left and a nude cherub on the right in a workshop scene depicting its main subjects in action.  This sculpture group shows a set of Romanesque-figured men in togas somberly facing each other inside a semicircular niche, and was commissioned by a guild of stone and woodworkers in homage to a group of artists executed for refusing to build a statue of Asclepius for Diocletian.  Located along with works by Ghiberti and Donatello in Florence's Or San Michele, this is, FTP, what sculpture group depicting a quartet of doomed Christian sculptors, the masterpiece of Nanni di Banco?
This piece is framed at the top by a semicircular arch under a central gable with a relief of the torso of a robed man touching his hands to his chest.  
Four Crowned Martyrs or Four Crowned Saints or Quattro Santi Coronati