His style is known from four signed works. These formed the basis for a reconstruction of his oeuvre.[1]
Recently, the ark of Saint Augustine, preserved in the Basilica of San Pietro in Ciel d'Oro in Pavia and built between 1362 and 1365 (but not completely finished), has been attributed, as already suggested by important scholars, such as Wilhelm Valentiner and Francesco Caglioti, the Pisan master. In all probability, Giovanni did not die in 1349, but remained operational in Lombardy at least until 1365, the year in which the work of the ark of Saint Augustine was interrupted, which was then made by Giovanni di Balduccio, now elderly, along with some of his students.[2]