Colorano cachet includes a silk depiction of two alchemists in a laboratory. Stamp depicts chemical glassware and fluids.
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 Of Work ArtCraft
- Subject Postage stamps, Postmarks, Commemorative postage stamps, United Nations, Treaties, Science on postage stamps, Nuclear nonproliferation, Nuclear energy--Research--Laboratories, Cachets (Philately), First day covers (Philately), Treaty on the Non-proliferation of Nuclear Weapons (1968 June 12)
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…