This striking 1969 French commemorative stamp features Le Redoutable, the nation’s first nuclear-powered ballistic missile submarine. The bold green-blue engraving shows the submarine cruising beneath the waves, with a missile launch depicted dramatically above the surface—symbolizing France’s entry into the strategic nuclear deterrent era. Designed by R. Cami, the stamp reflects a major milestone in French naval engineering and military history. A desirable thematic item for collections focusing on ships, submarines, military technology, or Cold War-era advances.