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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Cyrillic Greek Bogus OLYM: Greece. OLYMП: Greece. OLYMПIAKOI: Greece. O. A. (overprint): South Australia, officials (1868-74) [Official Assignee]. OAHA MAPKA: Finland (1866-74). OAXACA: Mexico- Oaxaca (1914). O.B. (overprint): Philippines, officials (1906-present) [Official Business]. OBOCK (overprint on stamps of French Colonies): Obock. OCCUPATION AZIRBAYEDJAN (overprint on stamps of Russia): Azerbaijan, unofficial overprints by Entente Allied officers (1918). OCCUPATION FRANCAISE (overprint): Hungary- French occupation (1919). OCCUPATION FRANCAISE CAMEROUN (overprint on stamps of Middle Congo): Cameroon- French occupation. OCEANIE: French Polynesia (1892-1958). OCUPACION DE PASQUA: Chile, semipostal for Easter Island. OДHA MAPKA YKSIMAPKKA: Finland. OESTERR: Austria (1883-1907) [Austria]. OESTERR POST with KAIS KOENIGL: Austria (1883-1907). OESTERR POST LIECHTENSTEIN: Liechtenstein- Austrian postal administration (1912-20). OEUVRES DE GUERRE (overprint): Cameroon, semipostals. OEUVRES DE SOLIDARITE FRANCAISE: French Colonies, semipostals (1943-4). OEUVRES SOCIALES (overprint on stamps of St. Pierre & Miquelon): St. Pierre & Miquelon, semipostals. O.F. CASTELLORISO (overprint on stamps of France): France- Castellorizo occupation. OFFENTLIG SAK: Norway, officials. OFFICIAL (overprint on stamps of Kenya and Uganda): Tanganyika, officials (1959-60). OFFISIEEL: South West Africa, officials. OFFISIEEL-OFFICIAL: South Africa, officials. OFF. SAK.: Norway, officials. OFFICIEL (overprint): Luxembourg, officials. OFFICIEL (overprint): Iran, officials denoting genuiness (1885-7). OFICIAL: Spanish or Portuguese language countries [Official]. O.Ф.(overprint with airplane): Bulgaria, airmails. O.H.E.M.S. (overprint): Egypt, officials (1922). O.H.H.S. (overprint): Egypt, officials (1907-1922) [On His Highness’ Service]. O.H.M.S. (overprint): Canada, officials [On His (or Her) Majesty’s Service]. OHU POST: Estonia, airmails. OIL RIVERS: Niger Coast Protectorate (1892-3). OKCA: Russia- Army of the North (1919) [Odjeiny Korpus SevernoyArmii]. O.K.C.A. POCCIЯ: Russia- Army of the North (1918). O.L. (overprint): Monaco, letters handed to mailmen or found in post boxes prior to 1908 [Origine Locale (Local Origin)]. OLTRE GIUBA (overprint on stamps of Italy): Oltre Giuba. O.M.F. CILICIE (overprint on stamps of France): France- occupation of Cilicia. O.M.F. SYRIE (overprint on stamps of France): Syria (1920-22) [Occupation Militaire Francaise (French Military Occupation)]. ON C.G.S. (overprint on stamps of India- Cochin): India- Cochin, officials [On Cochin Government Service]. O.N.F. CASTELLORIZO (overprint on stamps of French Levant): France- Castellorizo occupation [Occupation Navale Francaise (French Naval Occupation)]. ON K.D.S. (overprint): India- Kishangarah, officials [On Kishengarh Durbar Service]. ON L.F.S. (overprint): India, private overprints to prevent theft [On Local Funds Service]. ON S.S. (overprint): India- Travanacore, officials. ON S.S.S. (overprint): India- Sirmoor, officials [On Sirmoor State Service]. ON STATE SERVICE (overprint): Iraq, officials. ONZA: Spain, officials [Ounce]. O.P.S.O. (overprint): New Zealand, officials for Post Office sent abroad [On Public Service Only]. ORANGE RIVER COLONY (overprint on stamps of Cape of Good Hope): Orange River Colony (1900-2). ORANJE VRIJ STAAT: Orange River Colony [Orange Free State]. ORCHA: India- Orchha (1913-7). ORCHHA: India- Orchha (1913-7). ORDINARY (overprint): Liberia, airmail to regular mail conversion. ORE (currency) Denmark, Sweden or Norway. ORGANISATION INTERNACIONALE POUR LES REFUGIES (overprint): Switzerland- Int. Org. for Refugees, officials (1950). ORGANISATION MONDIALE DE LA SANTE (overprint): Switzerland- World Health Organization, officials. ORO PASTAS: Lithuania, air mails. ORPHELINS DE LA GUERRE: France, semipostals [War Orphans]. ORTS-POST: Switzerland (1850). O.S.: Norway, officials (1951-2) [Offentlig Sax]. O.S.: English language countries, officials [On Service]. O.S.G.S. (overprint): Sudan, officials [On Sudan Government Service]. OSTEN (overprint on stamps of Germany): Poland- German Occupation (1939). OSTERREICH: Austria. OSTERREICHISCHE POST: Austria. OSTERR-POST: Austria. OSTLAND (overprint on stamps of Germany): Russia- German occupation (1941-3). O.T. (overprint): Czechoslovakia, newspaper stamps used by commercial firms. OTVORENIE SLOVENSKENO (overprint on stamps of Czechoslovakia): Slovakia (1939). OUBANGUI-CHARI: Ubangi. OUBANGUI-CHARI-TCHAD (overprint on stamps of Middle Congo): Ubangi (1915-24). O.U.S. (overprint between wavy lines): Great Britain, official overprint for the Oxford Union Society to prevent pilfering of 1d reds. O.W. OFFICIAL (overprint): Great Britain- Office of Public Works, officials (1896-1902).
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