This is number 6, visual learning aid by Dr. Lips, 'Bauplane des Tierreiches' which translates to 'Blueprint of the animal kingdom'.
Published by Gerhard Gamble, Berlin, circa 1960.
It is illustrated by H.Bogen on paper/linen and was used in German schools. Versions were editied for use in many other European countries.
This poster shows the vertebrae of a fish.
 
Dimensions: width 114 x height 140 (including brackets).