Discovery of Radium and Cancer Control

This specialized semi-postal charity issue highlights global humanitarian cooperation, featuring a double portrait of the Nobel laureate physicists Pierre and Marie Curie operating in their laboratory.The background details their scientific apparatus, while the top inscription honors their milestone "1898 - P. et M. Curie découvrent le Radium," balanced across the bottom by the dedication text for the "Union Internationale Contre le Cancer" (International Union Against Cancer). Historically, this 1938 release represents a synchronized, empire-wide postal campaign orchestrated by metropolitan France to raise auxiliary funds for oncological research, radiology standardization, and the establishment of modern medical clinics.