A souvenir sheet commemorating the 400th anniversary of the famous Spanish Riding School. Designed by Adalbert Pilch (1917–2004), engraved by Rudolf Toth (1918–2009), and issued 12 September 1972.
Austria
A souvenir sheet commemorating the 400th anniversary of the famous Spanish Riding School. Designed by Adalbert Pilch (1917–2004), engraved by Rudolf Toth (1918–2009), and issued 12 September 1972.