S (overprint on stamps of Straits Settlements): Malaya- Selanegor (1879-91).
S. (overprint): South Australia, officials (1868-74) [Sheriff].
S.A.: Saudi Arabia.
SAARE (overprint on stamps of Bavaria): Saar (1920).
SAARE (overprint on stamps of Germany): Saar (1920).
SAARGEBIET: Saar (1920-34).
SAARGEBIET LUFTPOST: Saar, airmails.
SAARGEBIET VOLKSHILSE: Saar, semipostals.
SAARLAND: Saar (1957-9).
SAARPOST: Saar (1948).
SABAH (overprint on stamps of North Borneo): Sabah (1964).
SACHEN: German States- Saxony.
SACHSEN: German States- Saxony.
SAGGIO (overprint): Italy [Specimen or Proof].
SAHARA ESPANOL: Spanish Sahara.
SAHARA OCCIDENTAL: Spanish Sahara.
S.A.I.D.E. (overprint): Egypt, airmails [Services Ariens Internationalaux d’Egypte].
SAINT HELENA TRISTAN RELIEF (overprint): St. Helena, semipostal for Tristan da Cunha (1961).
SAINT PIERRE ET MIQUELON: St. Pierre & Miquelon.
SAINT PIERRE M-ON (overprint on stamps of French Colonies): St. Pierre & Miquelon.
S.A.K.: Saudi Arabia.
SALONICCO (overprint on stamps of Italy): Italy- Offices in Turkey- Salonika (1909-11).
SALONIKA (overprint on stamps of Italy): Italy- Offices in Turkey- Salonika (1909-11).
SALONIQUE (overprint on stamps of Russia): Russia- Offices in Turkey (1909-10).
SALVE HOSPES: Netherlands, semipostals for national tourist association.
SAMOA (overprint on stamps of Germany): Samoa (1900).
SAMOA (without WESTERN on stamps of New Zealand): Samoa (1914-34).
SAMOA I SISIFU: Western Samoa (1958).
SANDJAK D'ALEXANDRETTE (overprint on stamps of Syria): Alexandretta.
SANITORIUM: Dominican Republic, semipostals.
SANTANDER: Colombia- Santander.
SAORSTAT EIREANN (overprint on stamps of Great Britain): Ireland (1922-3) [Free State of Ireland].
SAR (Sytia (1961-present).
SARKARI: India- Soruth.
SARRE (overprint on stamps of Germany)- Saar (1920).
SASENO (overprint on stamps of Italy)- Saseno (1923).
SAURASHTRA: India- Soruth (1929-49).
S. C. (overprint): South Australia, officials (1868-74) [Supreme Court].
S.C.A.D.A.: Colombia- South American airline private stamps [Sociedad Colombia Alleman de Transportes Aereos].
SCARPANTO (overprint on stamps of Italy): Italy- Aegean Islands- Scarpanto (1912-32).
SCH. (currency): German States [Schilling].
SCHLESWIG: German States- Schleswig-Holstein (1864-5).
SCINDE DISTRICT DAWK: India (1852).
SCOUTS FUND (overprint): Siam, semipostals.
SCUDO (currency): Italian States- Roman States (1852).
SCUTARI DI ALBANIA (overprint on stamps of Italy): Italy- Offices in Turkey- Scutari (1909-16).
S.d.N. BUREAU INTERNATIONALE DU TRAVAIL (overprint): Switzerland, officials, Int. Labor Bureau.
SECOURS (with Arabic inscription): Saudi Arabia, postal tax stamps [Relief].
SECOURS AUX VICTIMS DE LA GUERRE: Haiti, postal tax stamps [Relief for War Victims].
SECOURS AUX REFUGIES (overprint): Syria, semipostal [Relief for Refugees.
SECOURS NATIONAL (overprint): French Colonies (various), semipostals [National Relief].
SEDANG: bogus issue (1899).
SEIYUN: Aden- Seiyun.
SEGNATASSA (no country name): Italy, postage due stamps (1863-9) [Sign Tax].
SEGNATASSE (no country name): Italy and Colonies, Vatican, postage due stamps [Sign Tax].
SEGURO POSTAL: Mexico, insured letter stamps [Safe Post].
SEGURO SOCIAL DEL CAMPESINO (overprint): Ecuador, postal tax stamps [Farmer’s Social Security].
SEJM WILNIE: Central Lithuania (1922).
SELANGOR: Malaya- Selangor.
SELLO POSTAL: Spain (1900-2).
SELLO POSTAL (overprint): Nicaragua, revalidating demonetized issues.
SELLOS DE CORREOS- RESENA HISTORICA: Spain, private issue by A.F. Duro (1881).
SEN (currency) Japan, Ryukyu Islands (1948-50).
SENEGAL (overprint on stamps of French Colonies): Senegal (1892).
SENEGAMBIE ET NIGER: Senegambia & Niger (1903).
SERBES (overprint on stamps of France): Serbia (1916-8).
SERBIEN (overprint on stamps of Austria or Bosnia and Herzegovina): Serbia- Austrian occupation (1916).
SERBIEN (overprint on stamps of Yugoslavia): Serbia- German occupation (1941).
SERVICE DE LA SOCIETE DES NATIONS (overprint): Switzerland, officials, League of Nations.
SERVICE DE L’ETAT: Egypt and Saudi Arabia, officials [Service of State].
SERVICE DES POSTES PERSANES: Iran, officials.
SERVICE FRANCO: Iran, officials.
SERVICE POSTAL AERIEN: Belgian Congo, airmails.
SERVICE POSTAL AERIENNE: French Morocco, airmails.
SERVICIO AEREO: Spanish language countries [Air Service].
SERVICIO AEREO HABILITADO (overprint): Honduras, officials made valid for airmail.
SERVICIO AEREO EXTERIOR: Spanish language countries [Foreign Air Service].
SERVICIO AEREO INTERIOR: Spanish language countries [Domestic Air Service].
SERVICIO AEREO INTERNACIONAL (overprint): Honduras, airmails [International Air Service].
SERVICIO AEREO SOBRETASE: Argentina, airmails.
SERVICIO CENTROAMERICANO (overprint): Nicaragua, airmails [Central American Service].
SERVICIO DEL ESTADO (overprint): Chile, officials [State Service].
SERVICIO INTERNO (overprint): Guatemala, officials [Internal Service].
SERVICIO OFICIO: Paraguay, officials [Official Service].
SERVICIO OFICIO (overprint): Peru and Ecuador, officials [Official Service].
SERVICIO ORDINARIO (overprint): Nicaragua, converting airmails to regular issues [Ordinary Service].
SERVICIO POSTAL AEREO: Brazil, airmails [Air Mail Service].
SERVICIO POSTAL AEREO (overprint): Colombia, Guatemala, Uruguay, airmails [Air Mail Service].
SERVICIO POSTAL DEL SALVADOR: El Salvador [El Salvador Postal Service].
SERVICIO POSTAL MEXICANO: Mexico [Mexico Postal Service] (1886-95).
SERVIZIO DI STATO: Italian language countries, airmail officials [State Service].
SEVILLA-BARCELONA: Spain (1929).
S F (overprint): Denmark, military stamps [Soldater Frimaerke (Soldier’s Stamp)].
S.G. (overprint): Sudan, officials [Sudan Government].
S. G. (overprint): South Australia, officials (1868-74) [Surveyor General].
SGR (currency): German States- various [Silver Groschen].
SH (in upper corners, no country name, eagle and shield): German States- Schleswig-Holstein (1850).
SHANGHAI CHINA (overprint on stamps of U.S.): United States- Offices in China (1919-22).
SHANGHAI LOCAL POST: Shanghai (1890-3).
SHANGHAI L.P.O.: Shanghai [Local Post Office] (pre-1890).
SHCO (on shield): Mozambique, postal tax stamps.
SHIHR AND MUKALLA: Aden- Shihr and Mukalla (1942-53).
SHQIPENIA (overprint on stamps of Turkey): Albania (1913).
SHQIPENIE: Albania.
SHQIPERIA: Albania.
SHQIPERIE KORCE VETQEVERITALE: French Forces- occupation of Albania- Korytza [Albanian Korytza Independent].
SHQIPERIJA: Albania.
SHQIPERISE: Albania.
SHQIPNI: Albania.
SHQIPNIJA: Albania.
SHQIPONIES: Albania.
S.H.S.: Yugoslavia (1918-20) [Srbska, Hrvatska, Slovenska (Serbo-Croat-Slovenian Kingdom)].
S.H.S. (overprint): Hungary- Yugoslavia- Croatia-Slovenia.
SICILIA: Italian States- Two Sicilies.
SIEGE DE LA LIGUE ARABE: Morocco.
SIEGE (OF) MAFEKING: Cape of Good Hope (1900).
SIMI (overprint on stamps of Italy): Italy- Aegean Islands- Simi (1912-32).
SINGAPORE MALAYA: Singapore (1948-59).
SIRMOOR: India- Sirmoor (1879-1901).
SIVAS (overprint on stamps of Turkey): Turkey (1930).
SKILLING (currency): Denmark, Norway.
SKILLING BANCO (currency): Sweden.
SLD. (currency): Austria- Offices in Turkey.
SLESVIG: Schleswig- plebecite issue (1920).
SLOVENI (overprint on stamps of Yugoslavia): Yugoslavia- Italian Occupation (1941).
SLOVENSKA POSTA: Czechoslovakia- Slovakia (1939-44).
SLOVENSKENO (overprint on stamps of Czechoslovakia): Czechoslovakia- Slovakia (1939-44).
SLOVENSKO: Czechoslovakia- Slovakia (1939-44).
SLOVENSKO-PRIMORGE (overprint on stamps of Yugoslavia): Yugoslavia- Istria (1945-6).
SLOVENSKY STAT (overprint on stamps of Czechoslovakia): Czechoslovakia- Slovakia (1939-44).
S. M. (overprint): South Australia, officials (1868-74) [Stipendiary Magistrate].
S. MARINO: San Marino.
SMIRNE (overprint on stamps of Italy): Italy- Offices in Turkey- Smyrna (1909-22).
SMYRNE (overprint on stamps of Russia): Russia- Offices in Turkey- Smyrna (1909-10).
SN (currency): Japan.
S.O. (overprint): Hong Kong, intended for revenue but postally used during a shortage (1882) [Stamp Office].
S.O. 1920 (overprint on stamps of Czechoslovakia): Eastern Silesia (1920) [Silesie Orientale].
SOBRE CLOTA PARA MULTOS POSTALES: Mexico- parcel posts.
SOBREPORTO: Colombia- postage dues.
SOBREPORTO AEREO: Colombia- airmail postage dues.
SOBRETASA AEREA- Colombia, airmail (1929).
SOCIEDAD COLOMBO-ALEMANA DE TRANSPORTES AEREOS: Colombia, airmail (1920-1).
SOCIEDADE DE GEOGRAPHIA DE LISBOA: Portugal, franchise stamps (1903-38) [Geographical Society of Lisbon].
SOCIEDADE HUMANITARIA CRUZ DE ORIENTE: Mozambique, postal tax stamps [East Cross Humanitarian Society].
SOCIEDADE PORTUGUEZA DA CRUZ VERMELHA PORTE FRANCO: Portugal, private franchise stamps [Portuguese Red Cross].
SOCIETE DES NATIONS: Switzerland- League of Nations, officials (1922-44).
SOL (currency): Peru.
SOLDI (currency): Austria- Lombardy-Venetia (1858-65).
SOLIDARITE 1947: Tunisia, semipostal.
SOLIDARITE FRANCAISE: French Colonies, general issue, semipostals (1943-4).
SOMALIA (overprint on stamps of Italy): Somalia (1922-3).
SOMALI DEMOCRATIC REPUBLIC (1970-3).
SOMALIA ITALIANA (overprint on stamps of Italy): Somalia.
SOMALIA ITALIANA MERIDIONALE (overprint on stamps of Italy): Somalia, postage dues (1906-8)..
SOMALILAND INDEPENDENCE 26 JUNE 1960 (overprint): Somaliland.
SOMALIS: Somali Coast (1902-67).
SOMALIYA: Somalia (1973-present).
SOM UBESORGET AABNET AF POST DEPARTMENTET: Norway, return letter stamp [Return to Sender]..
SOM UINDLOST AABNET AF POST DEPARTMENTET: Norway, return letter stamp [Return to Sender- Not Called For].
SONORA: Mexico- Sonora civil war issues (1913-4).
SORUTH: India- Soruth (1929-49).
SOUDAN (overprint on stamps of Egypt): Sudan (1897).
SOUDAN (overprint on stamps of French Colonies): Sudan (1894).
SOUDAN (overprint on stamps of Upper Senegal and Niger): Sudan (1921-30).
SOUDAN FAIS: French Sudan (1894) [Sudan Francaise].
SOUDAN FRANCAIS: French Sudan.
SOURASHTRA: India- Soruth (1923-9).
SOUTHERN RHODESIA (overprint on stamps of Great Britain): Southern Rhodesia, postage dues (1951).
SOUTH GEORGIA (overprint on stamps of Falkland Islands): Falkland Islands- South Georgia (1944- present).
SOUTH ORKNEYS (overprint on stamps of Falkland Islands): Falkland Islands- South Orkneys (1944-62).
SOUTH SHETLANDS (overprint on stamps of Falkland Islands): Falkland Islands- South Shetlands (1944-62).
SOUTH WEST AFRICA (overprint on stamps of South Africa): South West Africa (1923-27).
SOWJETISCHE BESATZUNGS ZONE (overprint on stamps of Germany): Germany- Russian occupation (1948).
SPANISH WESTERN SAHARA: Spanish Sahara.
SPECIAL EXPRES: Canada, special delivery.
SPECIMEN (overprint): English speaking countries, sample stamp.
SPITFIRE: Camerouns, semipostals.
SPM (overprint on stamps of French Colonies): St. Pierre and Miquelon (1885-6).
SPOORWAGEN CHEMINS DE FUR: Belgium, parcel posts.
S.Q. TRSTA-VUJA: Yugoslavia Zone B- Trieste.
S.Q. TRSTA-VUJA ZRACNA P: Yugoslavia Zone B- Trieste, airmails (1949).
SRBH HRVATI I SLOVENICA: Yugoslavia.
SRI LANKA: Ceylon (1972-present).
S.R.M. (currency): German States- Holstein [Skilling Reichs Munze].
SRODKOWA LITVA: Central Lithuania.
SRODKOWA LITWA POCZTA: Central Lithuania.
ST (no country name): Thailand (1932-43).
S. T. (overprint): South Australia, officials (1868-74) [Superintendent of Telegraph].
STAATS MARKE: German States- Wurttemberg, officials.
STADT BERLIN: Germany- Soviet occupation (1948-9).
STADT POST AMT: German States- Bremen [City Post Bremen].
STADT POST BASEL: Switzerland, Basel [City Post Basel].
STAEMPLE: Austria, newspaper stamps.
STAMPALIA (overprint on stamps of Italy): Italy- Aegean Islands- Stampalia (1912-32).
STAMPLE: Austria, newspaper stamps [Stamp].
STAMP DUTY: New Zealand and Victoria fiscal tax stamps.
STEMPLE: Austria, newspaper stamps [Stamp].
STATE OF KUWAIT: Kuwait (1962-present).
STATE OF SINGAPORE: Singapore.
STATI PARM: Italian States- Parma (1852-9) [State of Parma].
STATI PARMENSI: Italian States- Parma (1852-9) [State of Parma].
ST. CHRISTOPHER-NEVIS-ANGUILLA: St. Kitts- Nevis (1952-80).
STEMPEL with CENTS: Austria- Lombardy Venetia (1850).
STEMPEL with KREUZER: Austria (1850).
STG (no country name): Thailand (1932-43).
S. THOME E PRINCIPE: St. Thomas & Prince Islands.
STOCKHOLM: Sweden (1924).
S. TOME E PRINCIPE: St. Thomas & Prince Islands.
STOTHNKH (currency): Bulgaria.
ST-PIERRE M-ON (overprint on stamps of French Colonies): St. Pierre and Miquelon (1891-2).
STRAITS SETTLEMENTS (overprint on stamps of Labuan): Straits Settlements (1907).
S.T. TRSTA-VUJA: Yugoslavia Zone B- Trieste.
S.T.T. VUJA (overprint on stamps of Yugoslavia): Yugoslavia Zone B- Trieste.
S.T.T.-V.U.J.N.A. (overprint on stamps of Yugoslavia): Yugoslavia Zone B- Trieste.
S U (overprint on stamps of Strait Settlements): Malaya- Sungei Ujong (1878-91).
SUBMARINO with CORREO: Spain- submarine stamps (1938).
SUDAN POSTAGE TAX: Sudan, postage dues.
SUID-AFRIKA: South Africa.
SUIDWES-AFRIKA: South West Africa.
S UJONG (overprint on stamps of Strait Settlements): Malaya- Sungei Ujong (1891-4).
SUL BOLLETTlNO: Italy or overprinted colonies, parcel posts.
SUL BOLLETTlNO (on stamps with star and crescent): Somalia, parcel posts.
SULLA RICEVUTA: Italy or overprinted colonies, parcel posts.
SULLA RICEVUTA (on stamps with star and crescent): Somalia, parcel posts.
SULTANAT D'ANJOUAN: Anjouan.
SUNGEI UJONG (overprint on stamps of Strait Settlements): Malaya- Sungei Ujong (1878-91).
SUOMI (currency): Finland (1917-present).
SURCHARGE POSTAGE: Grenada. Trinidad and Tobago, postage dues.
SURGOS: Hungary, special delivery.
SURGOS (overprint on stamps of Hungary): Fiume, special delivery.
SURINAME: Surinam.
SVERIGE: Sweden.
S.W.A.: South West Africa.
S.W.A. (overprint on stamps of South Africa): South West Africa.
SWAZEILAND: Swaziland (1889-95).
SWAZILAND (overprinted on stamps of South Africa): Swaziland (1945).
SYRIAN ARAB REPUBLIC: Syria.
SYRIE: Syria.
SYRIENNE: Syria.
SZEGED 1919 (overprint on stamps of Hungary): Hungary- Szeged (1919).
T (in 4 corners with numeral in center): Dominican Republic (1901-42).
T (with lion., F and numeral): Belgium (1966-70).
T (overprint on stamps of any country): postage due stamps.
T (overprint with circle on stamps of Peru): Peru- Huacho (1884).
T. (overprint): South Australia, officials (1868-74) [Treasurer].
TA BETALEN PORT: Netherlands, Dutch Indies, Surinam, Netherlands Antilles.
TACNA Y ARICA: Peru-plebescite tax stamps (1925-8).
TAHITI (overprint on stamps of French Colonies or French Polynesia): Tahiti.
TAI-HAN: Korea (1895) [Empire of Korea].
TAKCA: Bulgaria, postage dues (1884-9) [Tax].
TAKCA ДOПЛAЩAHKE: Bulgaria, postage dues.
TAKCEHA БИЛbEΓA: Montenegro, postage dues.
TAKSE: Albania, postage dues [Tax].
TALCA: Chile- Talca tax stamp (1942).
TANGANYIKA & ZANZIBAR: Tanzania (1964).
TANGANYIKA KENYA UGANDA: Kenya, Uganda & Tanzania (1935-64).
TANGER (overprint on stamps of France and French Morocco): French Morocco (1918-24).
TANGER-FEZ: Sultanate of Morocco, local issue of questionable repute (1895).
TANGER (with CORREO(S) ESPANOL): Spanish Morocco-Tangier.
TANGIER (overprint on stamps of France): French Morocco, postage due stamps.
TANGIER (overprint on stamps of Spain): Spanish Morocco- Tangier.
TANGIER (overprint on stamps of Great Britain): Great Britain- Offices in Morocco (1927-57).
TANZANIA with MUUNGANO: Zanzibar & Tanzania- Zanzibar (1965-8).
TANZANIA, UGANDA, KENYA: Kenya, Uganda & Tanzania (1965-1976).
TANZANIA with ZANZIBAR: Zanzibar & Tanzania- Zanzibar (1965-8).
TASA: Uruguay, postage dues [Tax].
TASA POR COBRAR: Cuba, postage dues [Tax to Collect].
TASSE GAZETTE: Italian States- Modena, newspaper stamps (1859).
TAXA: Uruguay, postage dues.
TAXA DE FACTAGIU: Romania, parcel posts [Tax for Porterage].
TAXA DE GUERRA (with values in AVOS): Macao, war tax stamps (1919).
TAXA DE GUERRA (with values in 0$): Portuguese Africa, war tax stamps (1919).
TAXA DE GUERRA (with values in REIS): Portuguese Guinea, war tax stamps (1919).
TAXA DE GUERRA (with values in RP): Portuguese India, war tax stamps (1919).
TAXA DE PLATA: Romania, postage dues [Money Fine].
TAXA DEVIDA: Brazil, postage dues [Tax Due].
TAXA RECEBIDA: Mozambique, airmails.
TAXE (on 6 rappen stamp): Switzerland, Zurich.
TAXE (overprint): Albania, postage dues.
TAXE A PERCEVOIR: French language countries, postage dues [Tax to be collected].
TAXE A PERCEVOIR T (overprint): Ethiopia, postage dues.
TAXE PERCUE: Mozambique, airmails.
T.C. (overprint on stamps of Cochin): India- Travancore-Cochin (1950).
T.C.E.K.: Turkey, tax stamps (1946).
TCHAD: Chad.
TCHONGKING (overprint on stamps of Indo-China): France- Offices in China- Tchong King (1903-19).
T.C. POSTALARI: Turkey.
TE BETAALEN: South Africa and South West Africa, postage dues [To Pay].
TE BETALEN with A PAYER: Belgium, postage dues [To Pay.
TE BETALEN with PORT: Netherlands, Indies, Antilles, New Guinea or Surinam, all postage dues [To Pay].
TEHERAN (overprints): Iran (1902).
TELEGRAFOS: Spanish language countries [Telegraphs].
TELEGRAFOS DEL ESTADO: Chile, telegraph stamps [State Telegraphs].
T.E.O. with CILICIA (overprint on stamps of Turkey): Cilicia (1919) [Territoires Ennemis Occupes].
T.E.O. (overprint on stamps of France with denominations in MILLIEMES): Syria (1919) [Territoires Ennemis Occupes].
T.E.O. (overprint on stamps of France with denominations in MILLIEMES): France- Offices in Turkey: Cilicia (1919) [Territoires Ennemis Occupes].
T.E.O. (overprint on stamps of French Offices in Turkey): Cilicia, Syria (1919) [Territoires Ennemis Occupes].
TERRES AUSTRALES ET ANTARCTIQUES FRANCAISES: French Southern and Antarctic Territory.
TERRES AUSTRALES ET ANTARCTIQUES FRANCAISES (overprint on stamps of Madagascar): French Southern and Antarctic Territory.
TERRITOIRE DE L'ININI (overprint on stamps of French Guiana): Inini (1932-41).
TERRITOIRE DU FEZZAN: Libya -Fezzan -French occupation.
TERRITOIRE DU NIGER (overprint on stamps of Upper Senegal and Niger): Niger (1921-6).
TERRITOIRE FRANCAIS DES AFARS ET DES ISSAS: Afars and Issas.
TERRITORIO DE IFNI (overprint on stamps of Spain): Ifni (1941-50).
TERRITORIOS DEL AFRICA OCCIDENTAL ESPANOLA: Spanish West Africa.
TERRITORIOS ESPANOLES DEL GOLFO DE GUINEA: Spanish Guinea (1909).
TETUAN (overprint on stamps of Spain or Spanish Offices in Morocco): Spanish Morocco-Tetuan (1908).
T.F. (overprint): Orange River Colony, telegraph stamps [Telegraaf].
THAI: Thailand.
THAILAND (with denominations in cents): Malaya- Siamese occupation (1943-5).
THRACE INTERALLIEE (overprint on stamps of Bulgaria): Thrace- Allied occupation (1919-20).
THRACE OCCIDENTALE (overprint on stamps of Bulgaria): Thrace- Allied occupation (1919-20).
TIENTSIN (overprint on stamps of Italy): Italy- Offices in China- Tien Tsin (1917-21).
TIERRA DEL FUEGO: Argentina- local stamp (1891).
TIMBRE: French language countries [Stamp].
TIMBRE COLIS POSTEAUX (overprint): Indo-China, parcel post stamps.
TIMBRE DE RECONSTRUCCION: Guatemala, postal tax stamps [Reconstruction Stamp].
TIMBRE DU SOUVENIR: Luxembourg, semipostals.
TIMBRE FISCAL REPUBLIQUE SYRIENNE (overprint): Syria, postal tax stamps.
TIMBRE IMPERIAL JOURNAUX: France, newspaper stamps [Imperial Newspaper Stamps].
TIMBRE MOVIL: Spain, revenue stamps [Movable Stamp].
TIMBRE PATRIOTICO (overprint): Ecuador, postal tax stamps.
TIMBRE POSTE (overprint on stamps of France): French Morocco (1893).
TIMBRE POSTE COLIS POSTAUX (overprint): Martinique, postage dues.
TIMBRE PROPORCIONAL: Costa Rica, revenue stamps made valid for postage [Proportion Stamp].
TIMBRES DE MANDAT: Netherlands, money order stamps.
TIMBRE TAXE with A PERCEVOIR (no country name): French Colonies, postage dues (1945).
TIMBRU DE AJUTOR: Romania, postal tax stamps.
TIMBRU DE BINE-FACERE: Romania, postal tax stamps (1906) [Stamps of Benefaction].
TIMBRUL AVIATIEI: Romania, semipostals.
TIMBRU OFFICIAL: Romania, officials.
TIMOR (overprint on stamps of Macao): Timor (1885-95).
TIMOR (overprint on stamps of Mozambique): Timor (1946).
TJENESTE-FRIMAERKE: Denmark, officials (1871-1924) [Service stamp].
TJANESTE-FRIMARKE: Sweden, officials (1881-1919) [Service stamp].
TJENESTE-FRIMARKE : Sweden, officials (1874-80) [Service stamp].
TJENESTEFRIMERKE: Norway, officials (1926-32) [Service stamp].
T.L. 1 June 1899 (overprint): Tonga, marking king’s marriage [Taufa-Lavinia (king and queen’s name)].
TOGA: Tonga (1897-1949).
TOGO (overprint on stamps of Dahomey): Togo (1916-25).
TOGO (overprint on stamps of Germany): Togo (1897-99).
TOGO (overprint on stamps of Gold Coast): Togo (1915-6).
TOGO ANGLO-FRENCH OCCUPATION (overprint on stamps of German Togo): Togo- British occupation.
TOGOLAISE: Togo (1961-present).
TOGO OCCUPATION FRANCO-ANGLAISE (overprint on stamps of German Togo and Dahomey): Togo- French occupation.
TOKELAU ISLANDS (overprint on stamps of New Zealand): Tokleau islands (1966-7).
TOLIMA: Colombia- Tolima (1871-1904).
TOO LATE: Victoria, late fee stamp (1855).
TO PAY: Great Britain, postage dues.
TOSCANO: Italian States- Tuscany.
TOTOGI G TOHI: Tonga [Good for Postage].
TOU.: Iran, airmails (1928).
TOUVA: Tannu Tuva (1927-35).
TOVVA K 8 K POSTAGE: Tannu Tuva.
T. R. (overprint): South Australia, officials (1868-74) [Titles Registry].
TRAITE DE VERSAILLES (overprint on stamps of Germany): Allenstein, plebescite issue (1920).
TRANSACCIONES: Bolivia, revenue stamps used as postage (1893) [Transactions].
TRANSITORIO: Mexico, provisionals (1913) [Transitory].
TRANSITO TERRITORIO: El Salvador, transcontinental Zacapa routing (1899) [Territorial Transit].
TRANS-JORDAN: Jordan (1927-52).
TRANSPORTO PACCHI IN CONCESSIONE: Italy, parcel post authorized delivery stamps.
TRAVANCORE: India- Travancore-Cochin.
TRAVANCORE-ANCHAL: India- Travancore-Cochin.
TRAVANCORE-ANCHEL: India- Travancore-Cochin.
TRAVANCORE-COCHIN: India- Travancore-Cochin.
TREBIZONDE (overprint on stamps of Russia): Russia- Offices in Turkey- Trebizonde (1909-10).
TRENGGANU: Malaya- Trengganu.
TRENTINO (overprint on stamps of Austria): Austria- Italian occupation (1918).
TRIDENTINA (overprint on stamps of Italy): Austria- Italian occupation (1918).
TRIESTE (overprint on stamps of Italy): Trieste.
TRIPOLI: Tripolitania.
TRIPOLI DI BARBERIA (overprint on stamps of Italy): Italy- Offices in Africa (1909-15).
TRIPOLI with CAMPIONARIA: Libya (1927-38).
TRIPOLITANIA (overprint on stamps of Italy): Tripolitania.
TRIPOLI MAGGIO (overprint on stamps of Libya): Tripolitania, airmails (1934).
T. Ta. C.: Turkey, airmail tax stamps (1931-3).
TRISTAN DA CUNHA (overprint on stamps of St. Helena): Tristan da Cunha (1952-63).
TRISTAN DA CUNHA RESETTLEMENT 1963 (overprint): St. Helena.
TUMACO: Colombia- Cauca (1901-12).
TUNIS: Tunisia.
TUNISIE: Tunisia.
TURK: Turkey.
TURKIYE: Turkey.
TURKIYE COCUK ESIRGEME KORUMU: Turkey, postal tax stamps.
TURKIYE CUMHURIYETI POSTALARI: Turkey.
TURK POSTALARI: Turkey.
TUVALU (overprint on stamps of Gilbert & Ellice Islands): Tuvalu (1976).
TWO PENCE (under an enthroned queen): Victoria (1852-4).
UAE (overprint on stamps of Abu Dhabi): United Arab Emirates (1972).
UAPCTBO: Bulgaria (1937-44).
U.A.R.: United Arab Republic.
U.A.R. (denominations in m and f): Egypt (1958-71).
U.A.R. (denominations in p): Syria (1958-61).
UCAK POSTALARI: Turkey, airmails.
U.G.: Uganda, typewritten stamps (1895).
UGANDA (overprint on stamps of British East Africa): Uganda (1902).
UGANDA with EAST AFRICA: Kenya, Uganda & Tanzania.
UGANDA with KENYA: Kenya, Uganda & Tanzania.
UGANDA KENYA TANGANYIKA: Kenya, Uganda & Tanzania.
U.H. (overprint): Ecuador, postal tax late fee.
UHURU 9th DEC. 1961: Tanganyika.
UHURU 1963: Zanzibar.
UKRAINE (overprint on stamps of Germany): Russia- German occupation (1941-3).
UKRAINSKA NARODNA REPUBLICA: Ukraine [Ukrainian People’s Republic].
U.K.T.T. (overprint on stamps of Nigeria): Cameroons- Southern Cameroons (1960-1).
UKU LETA: Hawaii [Paid Letter].
ULTRAMAR (with a year date): Cuba (1873-6), Puerto Rico (1867-76) [Beyond the Sea].
ULTRAMAR (with a year date, denominations in Avos): Macao (1911) [Beyond the Sea].
ULTRAMAR (with a year date, denominations in Reis): Portuguese Guinea, war tax stamps (1919) [Beyond the Sea].
UNEF (overprint on stamps of India): India- military stamps (1965).
UNESCO (France- UN Educational, Scientific, and Cultural Org., officials (1961-71).
UN FORCE (INDIA) CONGO (overprint on stamps of Congo): India- military stamps (1962).
UN FORCE W. IRIAN (overprint): Pakistan- military stamps (1963).
UNIAO DOS ATIRADORES CIVIS PORTO FRANCO: Portugal, Rifle club franchise stamps [Union of Civilian Riflemen Free Stamp].
UNIE VAN ZUID AFRIKA: South Africa.
UNION FRANCAIS: Laos.
UNION INTERNATIONALE DES TELECOMMUNICATIONS: Switzerland- Int. Telecommunications Union, officials.
UNION OF SOUTH AFRICA: South Africa.
UNION PANAMERICANO 1890-1926 CORREO AEREO (overprint): Guatemala, air mails.
UNION POSTALE DEL SALVADOR: El Salvador.
UNION POSTALE UNIVERSELLE with HELVETIA: Switzerland- UPU Int. Bureau, officials (1957-60).
UNITED REPUBLIC OF TAHCAHYIKAB ZANZIBAR: Tanzania.
UNITED STATES CITY DISPATCH POST: U.S. Courier stamps- New York City.
UNTEA (overprint on stamps of Netherlands New Guinea): West Irian (1962) [United Nations Temporary Executive Authority].
UOPTO CKPNCOPN: Romania- Moldavia (1858).
U.P.A.E. ADHESION VICTIMAS SAN JUAN Y PUEBLO ARGENTINO: Paraguay, semipostals [For Earthquake Victims of San Juan and the Argentine People].
UPHA ΓOPA: Montenegro- Italian occupation (1941-3).
URGENCIA: Spain, special delivery.
URGENTE: Spain and Ifni, special delivery.
URUNDI (overprint on stamps of Congo): German East Africa- Belgian occupation (1916).
U.R.I. (overprint on stamps of Yugoslavia): Yugoslavia, unofficial semipostals (1923).
U.S.: United States.
U.S.I.R. (overprint): United States Internal Revenue.
U.S.A.: United States of America.
USKUB (overprint on stamps of Turkey): Turkey (1911).
U.S.P.S.: United States Postage Stamps or Postal Service.
U.S.T.C. (overprint): India- Cochin (1949) [United States of Travancore-Cochin].
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