Extremely rare hand relief Graz-Umgebung 1925

Extremely rare hand relief (geomorphological relief map) from the series "Heimat" No. 10. Graz-Umgebung (special map 1:75.000) from the publishing house of the Kartographische Anstalt G. Freytag & Berndt A.G., Vienna around 1925; in the original box - the cardboard cover has come off; a relief map made of plaster for teaching purposes; the design is by Franz Bibiza Spezialkarte 1:75.000; these teaching aids were also called "silent relief" in former times; the city of Graz and its surroundings can be seen, the relief map is hand-painted in colour - detailed magnifying glass painting with all important legends (houses, forests, fields, roads, train connections, rivers, etc.) from the time of the 1920s; a valuable Austrian contemporary document with museum quality; in original box, the relief in good condition; the leaflet and the map in the lid are missing, traces according to age and use; measurements: approx. 17 x 24.5 cm