Probably Ca Bosso (S. Polo 2802, Nadali & Vianello (1999) Tav. 28) at Ponte S. Toma, opposite side of calle to Palazzo Rizzo-Centini. Both also have frontage on the Rio de S. Toma.
Door-Head: Probably Ca Bosso at Ponte S. Toma (S. Polo 2802)
Door-Head: Probably Ca Bosso at Ponte S. Toma (S. Polo 2802)