This 1966 Italy commemorative pair celebrates two foundational figures of Italian Renaissance art. The Donatello stamp (1386–1466) features a sculpted angel relief, reflecting the sculptor’s pioneering naturalism and emotional realism. The Giotto stamp (1266–1337) depicts a serene Madonna portrait, highlighting the painter’s revolutionary transition toward human expression and perspective in medieval art. Issued in 40-lire denominations, these stamps form part of Italy’s cultural heritage series honoring great national artists. The set is highly collectible for both art-themed philatelists and Renaissance history collectors.