Issuers
starting with U
27 stamp-issuing authorities in our directory. Each guide covers the issuing period, the inscriptions to look for, popular series and value ranges.
- 1898–1899 U.S. Administration of Cuba Americas Guide
- 1919–1922 U.S. Post Offices in China Asia · Inscribed CHINA Guide
- 1958–1971 Uar (Somalia) Africa · Inscribed SOMALIA Guide
- 1915–1931 Ubangi Shari Africa · Inscribed OUBANGUI-CHARI Guide
- 1895–present Uganda Africa Guide
- 1918–present Ukraine Europe · Inscribed УКРАЇНА Guide
- 1964–1972 Umm Al Qiwain Middle East Guide
- 1961–2019 UNESCO (United Nations Educational, Scientific and Cultural Organization) Europe · Inscribed UNESCO Guide
- 1984–2019 Union Island Americas · Inscribed SVG Guide
- 1923–1991 Union of Soviet Socialist Republics (USSR) Europe · Inscribed CCCP Guide
- 1861–1861 Uniontown (Local Post) Americas · Inscribed UNIONTOWN Guide
- 1861–1861 Unionville (Local Post) Americas · Inscribed UNIONVILLE Guide
- 1973–present United Arab Emirates Middle East · Inscribed UNITED ARAB EMIRATES Guide
- 1958–1961 United Arab Republic (Syria) Middle East · Inscribed SYRIA Guide
- 1958–1967 United Arab Republic, Occupied Palestine (Gaza Strip) Middle East · Inscribed U.A.R. Guide
- 1960–1961 United Kingdom of Tonga and Tokelau (U.K.T.T.) Oceania · Inscribed U.K.T.T. Guide
- 1969–present United Nations Office at Geneva (UNOG) Europe · Inscribed UNITED NATIONS Guide
- 1979–present United Nations Office at Vienna (UNOV) Europe · Inscribed UNITED NATIONS Guide
- 1951–present United Nations, New York Americas · Inscribed UNITED NATIONS Guide
- 1847–present United States Americas · Inscribed U.S. POSTAGE Guide
- 1962–1962 Untea Guide
- 1906–1916 Upper Senegal and Niger Africa · Inscribed HAUT SÉNÉGAL ET NIGER Guide
- 1920–1923 Upper Silesia Europe Guide
- 1920–1984 Upper Volta Africa · Inscribed HAUTE-VOLTA Guide
- 1967–1967 Upper Yafa Middle East Guide
- 1856–present Uruguay Americas · Inscribed URUGUAY Guide
- 1992–present Uzbekistan Asia Guide
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