Keywords: Łaszczyński Michał Hertz.jpg Artwork Creator Bolesław Łaszczyński 1870 Oil on canvas cm 31 25 Institution National Museum Warsaw Not on view accession number MP 2798 object history ProvenanceEvent purchase National Museum in Warsaw credit line Bol Łaszczyński 1870 date/signature bottom left http //cyfrowe mnw art pl/dmuseion/docmetadata id 16363 show_nav true full_screen true cyfrowe mnw art pl See below PD-old-100 DEFAULTSORT 1870; Michał Hertz Paintings by Bolesław Łaszczyński in the National Museum in Warsaw 1870 oil on canvas paintings Portrait 1870 portrait paintings Male 1870s paintings in Poland 19th-century oil oval portraits of men at three-quarter length 19th-century oil portraits of sitting men at three-quarter length Hand-in-waistcoat in portrait paintings |