An oil on canvas, a ceremonial portrait of Bertuccio Valier or Valiero, the 102th Doge of Venice (1656-1658), Venetian school, middle of 17th century, with an ebonized frame, 17th century (160 cm x 130 cm, with the frame : 182 cm x 154 cm) (63 in. x 51 in., with the frame : 72 in. x 61 in.)