Issued by Liechtenstein in 1975, this attractive definitive set showcases the principality’s historic architecture and fortified landmarks in a bold, modern graphic style. Designed by Georg Malin and printed by Courvoisier S.A., the four values (40, 50, 70 & 100 rappen) depict churches, traditional houses, and a prominent hilltop castle—reflecting Liechtenstein’s medieval heritage. The series is admired for its rich colours, clean engraving, and cohesive design theme. A solid mid-1970s European architectural set, ideal for collectors of castles, buildings, or Liechtenstein definitives.