Two Soviet USSR posters for schools in the field of physics. Please check well the photos for condition of the posters, they have some signs of use. Poster 1 title: Elastic force Poster 2 title: Equilibrium of bodies Both posters have the same writings in the bottom right and left corners: translation of the signature in the left bottom corner: "Visual guide for secondary schools. Designer M.A. Ushakov. Painter Y.I. Filatov Editor: N.A. Fomina Arts editor B.V. Bogachenkov" translation of the signature in the right bottom corner: "Moscow, "Prosveschenie" 1979 Approved for printing 4/XI-1978. Pressrun 50000. Order #1694. 2nd edition, revised. Offset printing factory #2 of Rosglavpoligrafprom of State Committee of the RSFSR for editorials, printing and bookselling, the city of Dmitrov of Moscow region, Moskovskaya street, 3."