Guinea-Bissau - 60th Anniversary of the Vostok 1 and the First- Man in Space
Landing of the Perseverance Rover on Mars
Date of issue: 12 July 2021
Although this editions are authorized by the Guinea-Bissau postal administration, it was not sold in Guinea-Bissau, but only distributed to the novelty trade by the Guinea-Bissau philatelic agency.
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