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Postage stamp commemorating Ghana's conversion to the metric system in 1975
Box 1- 1975
Stamp depicts scales weighing jars of jam, with text, "2 1/4 lbs of Jam is a little more than a kilogram."
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Romanian postage stamp commemorating Expo '67 in Montreal
Box 1- 1967
Depicts logo for Expo '67 inside a diagram of an atom (diagram may represent an orbiting spacecraft).
- Artist I. Druga, G. Bozianu
- Subject Romania, Exhibitions, Commemorative postage stamps, Science on postage stamps, Postage stamps
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Cuban postage stamp promoting El Mundo Unido Contra La Malaria campaign
- Cuban postage stamp promoting The World United Against Malaria campaign
Box 1- 1962
Cuban postage stamp printed to promote world anti-malaria campaign. Depicts a chinchona plant and chemical formulas for chloroquine and primaquine, medications used to treat malaria.
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Soviet postage stamp commemorating 1965 IUPAC meeting in Moscow
Box 1- 1965-Jun-15
Stamp issued to publicize the 20th Congress of the International Union of Pure and Applied Chemistry (IUPAC), held in Moscow, July 12-18. The names of both the organization and the host city are spelled with chemical…
