Many countries of the world have celebrated the achievements of Isaac Newton by issuing commemorative postage stamps. Which counties? Ajman, Ascension Islands, Benin , Britain, Bulgaria, Burundi, Central African Republic, Guinea, Chad, Democratic Peoples Republic of Korea (North Korea), Djibouti, Dubai, France, Germany, Ghana, Grenada, Guinea, Hungary, Laos, Malawi, Maldive Islands, Mali, Mongolia, Mozambique, Nevis, Nicaragua, Niger, Paraguay, People’s Republic of the Congo, Poland, Redonda, Republic of the Congo, San Marino, Sierra Leone, Soviet Union, St. Vincent and the Grenadines, Togo, Uganda, Uruguay, Viet Nam, Yemen. This stamp from the Congo apparently honors one of Newton’s less-celebrated but more mysterious achievements.
Thanks to investigator Stanley Eigen for bringing this to our attention.)