Issued in 1947, this Austrian definitive stamp depicts the breathtaking Semmering Railway winding through the Alpine landscape — one of the first mountain railways in Europe and now a UNESCO World Heritage Site. The design captures the rugged cliffs and high viaducts that made this 19th-century engineering feat world-famous. Printed in deep violet, it forms part of the “Landscapes” series portraying Austria’s scenic beauty after World War II. The initials “A.C.” in the corner identify the designer, Adalbert Pilch’s collaborator Alfred Chmielowski.