Leon Zack, Russian, French 1892 to 1980, mixed media, gouache, watercolor and ink, painting on heavy paper depicting an architectural composition. Signed and inscribed, N I, lower right. Framed. Leon Zack, also known as Lev Vasilyevich Zak, was a Russian born French figurative and later abstract painter and sculptor. He has been described as a School of Paris painter. Leon Zack is known for Abstract paintings, sculpture, illustration, and design. One of a kind artwork.