Stamps: Germany, 275th anniversary of the Port of Duisburg. 100 Pfennig: Features a stylized and colorful illustration of industrial and port facilities, including cranes, a power plant cooling tower, and a coal mine, symbolizing the economic infrastructure of the Rhein-Ruhr region. Issued on 12.09.1991.
Postmark: Commemorative first-day cancellation - DUISBURG 13 / LEINEN LOS! / 275 JAHRE FEIER / RHEIN-RUHR / HAFEN / DUISBURG - 12. 9. 1991. The cancellation includes the event logo "Leinen los!" (Cast off!) and originates from Duisburg, coinciding exactly with the date of issue and the commemorative event. (Neste link, pode encontrar detalhes adicionais sobre a particularidade deste carimbo de transição postal da reunificação alemã)
Postcard: Commemorative postcard featuring a large-scale photograph of port operations in Duisburg. The composition is dominated by large metal cargo cranes on rails, positioned along the quay alongside barges and bulk materials, reflecting the industrial activity of the inland port. Edition Deutsche Maxiphil
Concordance:
Thematic: Excellent thematic concordance. Both the stamp and the postcard photograph focus on the port infrastructure and logistics of Duisburg, creating a visual and conceptual unity centered on the 275th anniversary of the port.
Geographic: Absolute geographic concordance. The stamp was issued to celebrate the Port of Duisburg, and the postmark originates from the city of Duisburg itself. The industrial iconography of the postcard faithfully reflects the urban landscape of the Ruhr region.
Temporal: Perfect temporal concordance. The postmark date of September 12, 1991, corresponds to the first day of circulation for the 275th-anniversary commemorative issue of the Duisburg Rhein-Ruhr Port.
