From:
John Leach's Encyclopedia of Postal Authorities :

F

Falkland Islands - Funchal

Falkland Islands - Funchal

Falkland Islands
Falkland Islands Dependencies
Far Eastern Republic
Faridkot
Faroe Islands
Farquhar
Federal People's Republic of Yugoslavia
Federated Malay States
Fernando Poo
Fezzan
Fezzan (French Occupation)
Fiji
Finland
Finnish Occupation Issues
Fiume
Fiume (Free State)
Fiume (Yugoslav Occupation)
Fiume & Kupa Zone (Italian Occupation)
Formosa
France
Free French Forces in the Levant
French Colonies
French Committee of National Liberation
French Community
French Congo
French Equatorial Africa
French Guiana
French Guinea
French Indian Settlements
French Levant
French Morocco
French Occupation Issues
French Oceanic Settlements
French Polynesia
French Post Offices Abroad
French Post Offices in the Turkish Empire
French Protectorate, Morocco
French Somali Coast
French Soudan
French Southern & Antarctic Territories
French Territory of Afars & Issas
French West Africa
French Zone (General Issues)
Friendly Islands
Fujeira
Funafuti
Funchal