This striking Spanish stamp was issued in 1966 to commemorate the 17th Congress of the International Astronautical Federation (IAF) held in Madrid. It features a stylized depiction of Don Quixote and Sancho Panza riding a rocket-like steed, symbolizing Spain’s cultural heritage embracing the modern space age. The dynamic upward motion and starry backdrop emphasize progress and exploration. The denomination is 1.50 pesetas, and the stamp reflects Spain’s active participation in global scientific discourse during the space race era.