Issued by Grenada in 1973, this commemorative stamp honors Dr. Ignaz Semmelweis, the pioneering physician celebrated for advancing antiseptic practices and maternal health. The design marks the 25th anniversary of the World Health Organization (1948–1973), featuring the WHO emblem above a finely rendered portrait of Semmelweis. Printed during the reign of Queen Elizabeth II (E II R), the stamp combines medical history with international public-health heritage. A desirable thematic issue for collectors of medicine, WHO, and global health topics, as well as Caribbean commemoratives.