European master paintings from Swiss collections

["19th century" "20th century" "Collectors and collecting" "Europe" "European Painting" "Exhibitions" "Modern Painting" "Painting" "Painting European" "Painting Modern" "Post-impressionism (Art)" "Switzerland" "Peinture europ\u00e9enne" "Expositions" "Postimpressionnisme (Art)" "Peinture" "Collectionneurs et collections" "Painting exhibitions" "Painting collectors and collecting" "Painting swiss"]