This striking commemorative set from Liechtenstein features four stamps designed by renowned Swiss artist Hans Erni, celebrating the unity of science, nature, and art. Each stamp represents a different field—Physics (30 Rp), Astronomy (60 Rp), Biology (10 Rp), and Art (80 Rp)—illustrated with Erni’s distinctive human figures intertwined with scientific diagrams and cosmic elements. Printed by Courvoisier S.A., the set reflects Liechtenstein’s tradition of producing visually artistic and intellectually themed stamps. The designs blend classical human forms with modern scientific symbolism, making them highly collectible. These stamps are admired by thematic collectors focusing on science, art, and philosophy. A beautiful mid-20th-century European issue combining aesthetics with knowledge.