In terms of composition and style, the present relief appears to be influenced by the work of Andriolo de Santi (1342-1375). Looking at the tomb of the Scroffa family in the Convent of Santa Corona, Vicenza, which was also influenced by this artist, one can see a very similar relief of the Virgin and Child (C. Rigoni, Scultura a Vicenza, Milano, 1999, p. 26, fig. 22). It compares to the present relief in that the overall composition is virtually identical, with further parallels to be found in the facial types of the Virgin and Christ Child, the heavy gothic folds of the drapery, and the splayed position, and modelling, of the feet.
Andriolo de Santi (1342-1375) was an Italian sculptor and architect who spent most of his time in Venice. He carved a number of important sculptural monuments, such as church and chapel façades, portals, walls and tombs. He is the first sculptor to have introduced a devotional image in a portal in the Veneto, as can be seen in the Church of San Lorenzo in Vicenza (C.Rigoni, Scultura a Vicenza, Milano, 1999, p. 20-27, no. 22).
A thermolumninescence test carried out by Oxford Authentication Ltd. shows that this terracotta relief was last fired between 400 and 600 years ago.