Diptych with Portraits of Gian Galeazzo Visconti, First Duke of Milan, and His Wife Caterina di Bernabὸ Visconti

Diptych with Portraits of Gian Galeazzo Visconti, First Duke of Milan, and His Wife Caterina di Bernabὸ Visconti

Italian 18th/19th Century · probably late 18th or early 19th century · Polychrome diptych of wood and precious stones, two oval nielloed silver plates with traces of gilding ·  Accession ID  1961.9.171.a-d