Issued by Deutsche Bundespost in 1980, this 80 Pfennig olive-green stamp features Schloss Wilhelmsthal, a Rococo-style palace near Kassel, Hesse. Built in the mid-18th century under Landgrave Wilhelm VIII of Hesse-Kassel, the palace served as a summer residence. The minimalist architectural linework captures the façade’s symmetry and elegance, part of the long-running “Castles and Palaces” definitive series celebrating Germany’s architectural heritage. A fine example of precision design and historical commemoration in West German philately.