Olga Boznanska created many portraits of people from the art world. The artist knew two brothers – artists Samuel and Leon Hirszenberg. In the last years of her stay in Munich, Olga Boznanska studied painting with the eldest of them, Samuel. He worked in Krakow, Paris, Munich, and Jerusalem. He mainly painted genre scenes. This portrait belongs to the Paris period of Boznanska's oeuvre. The work is executed in the artist's typical style, influenced by Edouard Manet, characterised by the restriction to several primary colours and the rejection of a clear line and contour. Against a greenish-blue spatial background, a man with a beard and moustache dressed in black is depicted. He is seated with his left hand supporting his head and his right hand resting on his knees. The psychological aspect of the portrait is interesting. The position of his hands and the nervous expression of his face with restless round eyes convey deep anxiety and thoughtfulness to the viewer. The work was awarded a gold medal at an international exhibition in Munich in 1905.