Inscription
lower right plate: Valerianus Regnartius Sculptsit Romae. RD del. / 49; across top plate: ICHNOGRAPHIA TEMPLI SANCTI IOANNIS BAPTISTAE NATIONIS FLORENTINORVM IN VRBE / MICHAELS ANGELO BONARROTO ARCHITECTO IN LVCEM EDITA A VALERIANO REGNARTIO