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Language French Remove constraint Language: French Language English Remove constraint Language: English Subject Science on postage stamps Remove constraint Subject: Science on postage stamps Subject Cachets (Philately) Remove constraint Subject: Cachets (Philately)

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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…

    • 1971

    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…