Sergei Osipov, Russian, 1915 to 1985, oil on canvas painting depicting a nude female figure titled Nude Model. Signed by the artist lower right. Sergei Ivanovich Osipov was a Soviet painter, graphic artist and art teacher, who lived and worked in Leningrad. He is regarded as one of the representatives of the Leningrad school of painting, most known for his landscape and still life paintings. Nude Female Paintings And Russian Art Collectibles.