Testimonies from Northern Italy regarding locally-made doorknockers are rare, but notable examples exist, such as those found at Sant’Ambrogio in Milan, the Diocesan Museum of Susa, the Museum of Santa Giulia in Brescia, and the Abbey of San Nazzaro Sesia in Piedmont. These artifacts have recently undergone chemical analysis by CenISCo (Centro Interdisciplinare per lo Studio e la Conservazione dei Beni Culturali) at the University of Eastern Piedmont, in collaboration with the University of Turin, as part of the “Memip” project (Medieval Enamels, Metalwork, and Ivories in Piedmont: art-historical and scientific methods for evaluation).
This article presents the initial results of these analyses, along with the accompanying art-historical research. The doorknockers are compared stylistically and morphologically with Romanesque examples produced across Europe, using Ursula Mende’s 1981 monographic study as a reference. This comparison highlights the unique features of the Italian artifacts, such as the distinctive inscription that decorates the doorknockers in Milan and the influence of sculptural production from the Sant’Ambrogio shipyard. Furthermore, there is a hypothesis suggesting that the artifact from Piedmont may have an archaic character, potentially dating back to the 11th century.
The analysis, conducted with the non-invasive THERMO Niton XLT GOLDD instrument, will ultimately allow for a comprehensive comparison of the objects once sampling is complete. The final results will help determine the extent of similarities or differences between the doorknockers, providing a clearer understanding of their historical and artistic significance.