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Colorano cachet includes a silk depiction of two alchemists in a laboratory. Stamp depicts chemical glassware and fluids.
First day cover created by Artmaster includes cachet depicting a 3D image of a nonexistent molecule. Stamp depicts chemical glassware. Envelope is signed by Herman S. Bloch, the inventor of the catalytic converter.
Cachet created by ArtCraft depicts a male and female chemist working in a laboratory setting, with text reading, "A Century of Modern Chemistry." Cover signed by Glen Seaborg.
Cachet depicts two chemists working in a laboratory.
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".
- Creator ArtCraft
- Subject Treaty on the Non-proliferation of Nuclear Weapons (1968 June 12), Treaties, Science on postage stamps, Commemorative postage stamps, First day covers (Philately), Postage stamps, Nuclear nonproliferation, Nuclear energy--Research--Laboratories, United Nations, Cachets (Philately), and Postmarks
First Day Cover commemorating United Nations efforts for the cessation of nuclear testing and preservation of humanity
Cachet and stamp depict a mushroom cloud from a nuclear weapons test. Cachet was created by Fleetwood and the stamp was commissioned by the United Nations Postal Administration. Postmark depicts the United Nations…
Cachet created by Colorano is a silk depiction of Rosalyn S. Yalow with text that describes the work which earned her the 1977 Nobel Prize in Medicine. Part of the Women's History Series (No. 83) by the National…
Cachet and stamp depict Albert Einstein. Cachet also depicts Einstein's formula for mass-energy equivalence and is from the Prominent Americans Series. The postmark is from Princeton, New Jersey.
Cachet created by Cachet Craft depicts the Tuskegee Institute and George Washington Carver. Stamps feature a portrait of Carver.
- Artist Boll, Ken
- Creator Cachet Craft
- Subject Inventors, Science on postage stamps, African American scientists, Commemorative postage stamps, Carver, George Washington, 1864?-1943, First day covers (Philately), Postage stamps, Agricultural chemistry, Botanists, Tuskegee Institute, and Cachets (Philately)