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Language Russian Remove constraint Language: Russian Format Image Remove constraint Format: Image Rights No Known Copyright Remove constraint Rights: No Known Copyright Subject Postage stamps Remove constraint Subject: Postage stamps Subject Science on postage stamps Remove constraint Subject: Science on postage stamps

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    • 1964

    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…