Souvenir sheet stamp commemorating the 25th anniversary of the World Health Organization (WHO). This stamp, issued in Grenada, features a portrait of Marie Skłodowska Curie (1867-1934) with the WHO symbol.

Stamp depicts Louis Pasteur (1822-1895) with microbes as seen through a microscope.

Stamp and cachet depicting Louis Pasteur (1822-1895) with microbes as seen through a microscope.

Stamp from the Republic of Dahomey, now Benin, commemorating Louis Pasteur (1822-1895).

Stamp from the Gabonese Republic commemorating Louis Pasteur (1822-1895). The stamp depicts Pasteur with a microscope.

Stamp from the Comoro Islands commemorating Louis Pasteur. The stamp depicts Louis Pasteur (1822-1895) with a microscope.

Stamp depicts French chemist and microbiologist Louis Pasteur, along with boy receiving rabies vaccination, livestock, and chemical apparatuses.

Mexican postage stamp honoring the Consejo Nacional de Ciencia y Tecnología (National Council of Science and Technology), which was founded in 1970. Equivalent to the National Science Foundation (United States), the…

Cachet created by ArtCraft includes depictions of an Atomic Research Center. Stamp depicts a mushroom cloud from a nuclear explosion crossed out with an "x".

Postage stamp from Dubai, featuring a depiction of Persian polymath Avicenna (circa 980 - 1037), also known as Ibn Sina, Abu Ali Sina, and Pur Sina. Avicenna is regarded as one of the most significant physicians,…

Stamp depicts the maple leaf cement factory in Daud Khel, Pakistan. The Colombo Plan for Cooperative Economic and Social Development in Asia and the Pacific is a regional inter-governmental organization. It was…

Cachet includes two depictions of Lord Rutherford and text, "World Famous Scientist Pioneering in Radioactivity and Nuclear Physics." The research program in the field of radioactivity undertaken by Rutherford at…

Cachet depicts Frederick Banting and Charles Best with a description of how they isolated and refined insulin as an independent hormone.

Cachet, semipostal stamp, and postmark feature a portrait of the chemist, François Auguste Victor Grignard. The cachet and stamp also depict the apparatus Grignard used to produce the Grignard reaction, a new method for…

Stamp depicts an alchemist, rocket, and radar system.

Stamp from Pakistan commemorating the 10th FAO (Food and Agriculture Organization) Regional Conference for the Near East held in Islamabad.

Stamp commemorating the 50th anniversary (Golden Jubilee) of the Philippine Pharmaceutical Association (FAPA).

Israeli postage stamp issued in 1969, commemorating the 25th anniversary of the Weizmann Institute of Science. The design features a stylized atom and flask, symbolizing science, with the institute's name in Hebrew and…

Stamp depicts a sugar refinery along with a profile of Queen Elizabeth II in gold.

Philatelic First Day Cover Cachet and stamp depict the Japanese nuclear ship, Mutsu, and a structural diagram of an atom. The Mutsu was originally built as a nuclear-powered general cargo ship in 1968, but never…

Philatelic First Day Cover Cachet and stamp depict the launching of the Japanese nuclear ship, Mutsu, and a structural diagram of an atom. The Mutsu was originally built as a nuclear-powered general cargo ship in 1968,…

Cachet depicts a light beam passing through a prism to create a spectrum. Stamp depicts colors of the spectrum. The 15th Colloquium Spectroscopicum Internationale was held May 26-30, 1969 in Madrid, Spain.

Australian postage stamp commemorating the International Soil Science Congress. The stamp features a hand holding a test tube, a soil analysis chart, a soil profile, and wheat stalks.

Stamp was issued on the occasion of a Natural Rubber Conference held in Kuala Lumpur, Malaysia, in 1968. It depicts a space-filling model of isoprene and a representation of the traditional way of collecting natural…

Stamp depicts Boeing 707, chemical apparatus, and heavy oxygen isotopes.