Just saw this painting in the Metropolitan Museum of Art in NYC. Madame Ramon Subercaseaux John Singer Sargent (American, Oil on canvas. Subercaseaux (born was the newlywed wife of the Chilean consul to Paris.
John Singer Sargent 'Alfred, Son of Asher Wertheimer - 1901 Alfred was a chemist by profession, hence the two glass retorts hanging against the wall. John Singer Sargent - American artist and leading portrait painter of his generation.