Vintage school chart potato botanical poster by jung koch quentell for hagemann 1960s

Vintage roll down school chart, botanical poster by Jung, Koch, Quentell for Hagemann Verlag. From a series of biological wall maps by Gottlieb von Koch, Dr. Friedrich Quentell and Heinrich Jung were developed and printed by various publishers until the 1980s. The attention to details, the brillant colours and the dark background, which guaranteed improved visibility, are absolutely unique for teaching aids. Labeling was deliberately avoided in order to make the cards usable internationally. The card is printed on paper and backed with canvas. Black wooden dowel top and bottom for use, stabilization and storage. Printed in 1969. The chart is pre-used and in good vintage condition with minor traces of use and age. The colors are still fresh and bright.