The artist's name on the poster is not indicated. By assigning Artist Unknown to a poster it also could mean the artist used a chop mark whereby no signature is seen thus rendering the artist's identity anonymous.
Located in Sofia, Bulgaria, the origin of Nauka i Izkustvo (Science and Art State Publishing House) dates to at least the early 1950s. The publisher disseminated a variety of content over the years including topics on history, sociological science, natural science, motion pictures, music and theater. While its productivity was chiefly literature, occasionally the publisher emitted posters and ephemera.