| A |  --- | Austria (1910-) |
| ABW | --- | Aruba (?) |
| ADN | --- | Peoples Democratic Yemen (Aden, 1938-?, see YE) |
| AFG | --- | Afghanistan (1971-) |
| AL | --- | Albania (1934-) |
| AM | --- | Armenia (?) |
| AN | --- | Angola (?) |
| AND | --- | Andorra (1957-) |
| ANT | --- | Antigua (?) |
| AS | --- | Saudi Arabia (Al-Arabiya Al Saudiya, ?-74, see SA) |
| ASM | --- | American Samoa (?) |
| AUS | --- | Australia (1954-) |
| AZ | --- | Azerbaijan (?) |
| B | --- | Belgium (1910-) |
| BA | --- | Burma (1937-56, see BUR) |
| BD | --- | Bangladesh (1978-) |
| BDS | --- | Barbados (1956-) |
| BG | --- | Bulgaria (1910-) |
| BH | --- | Belize (British Honduras, 1938-?, see BZ) |
| BI | --- | British India (1912-47, see IND and PAK) |
| BiH | --- | Bosnia and Herzegovina (?) |
| BL | --- | Basutoland (1935-67, see LS) |
| BM | --- | Bermuda (?) |
| BOL | --- | Bolivia (1967?-) |
| BP | --- | Bophuthatswana (Bechuanaland Protectorate) (1935-67, see ZA) |
| BR | --- | Brazil (1930-) |
| BRG | --- | British Guyana (1954-72, see GUY) |
| BRN | --- | Bahrain (1954-) |
| BRU | --- | Brunei (1956-) |
| BS | --- | British Somaliland (1935-66?, see SP) |
| BS | --- | Bahamas (1950-) |
| BT | --- | Bhutan (?) |
| BUR | --- | Myanmar (Burma, 1956-) |
| BVI | --- | British Virgin Islands (?) |
| BY | --- | Belarus (Byelorussia, 1992-) |
| BZ | --- | Belize (?) |
| C | --- | Cuba (1930-) |
| CA | --- | Canada (1952?-56, see CDN) |
| CAM | --- | Cameroon (1953?-82?, see RUC) |
| CB | --- | Belgian Congo (Congo Belge, 1931-60, see KAT, RCL and RU) |
| CDN | --- | Canada (origin unknown, 1956-) |
| CFS | --- | French Somaliland (Côte Française des Somalis, ?-?, see SO) |
| CGO | --- | Congo Kinshasa (1970?-72, see ZR) |
| CH | --- | Switzerland (Confoederatio Helvetica, 1911-) |
| CI | --- | Ivory Coast (Côte d'Ivoire, 1961-) |
| CL | --- | Sri Lanka (Ceylon, 1932-) |
| CN | --- | People's Republic of China (?) |
| CNB | --- | Borneo (Colony of North Borneo, 1955-63, see PTM) |
| CO | --- | Colombia (1952-) |
| CPV | --- | Cape Verde Islands (?) |
| CR | --- | Costa Rica (1956-) |
| CS | --- | Czechoslovakia (1922-?, see CZ and SK) |
| CU | --- | Curacao (1936-57, see NA) |
| CY | --- | Cyprus (1932-) |
| CZ | --- | Czechoslovakia (?) |
| D | --- | Germany (1910-) |
| DA | --- | Danzig (1922-39, see D) |
| DDR | --- | East German (Deutsche Demokratische Republik, 1974-89, see D) |
| DK | --- | Danmark (1914-) |
| DOM | --- | Dominican Republic (1952-) |
| DY | --- | Benin (Dahomey, 1961-78?, see RPB) |
| DZ | --- | Algeria (Al Djazair, 1963-) |
| E | --- | Spain (España, 1910-) |
| EA | --- | British East Africa (1932-38, see EAK, EAN, EAT, EAU and EAZ) |
| EAK | --- | Kenya (East Africa Kenya, 1938-78?, see KE) |
| EAN | --- | Nyasaland (East Africa Nyasaland) (1938-38, see NP) |
| EAT | --- | Tanzania (East Africa Tanganyika, 1938-) |
| EAU | --- | Uganda (East Africa Uganda, 1938-) |
| EAZ | --- | Tanzania (East Africa Zanzibar, 1938-64, see EAT) |
| EC | --- | Ecuador (1962-) |
| EIR | --- | Ireland (Éire, 1938-62, see IRL) |
| EQ | --- | Ecuador (Equador, 1952-62, see EC) |
| ES | --- | El Salvador (1978?-) |
| ET | --- | Egypt (1927-) |
| ETH | --- | Ethiopia (1964-) |
| EW | --- | Estonia (Eesti Vabariik, 1930-40 + 1991-) |
| F | --- | France (1910-) |
| FIF | --- | French India (France Inde Français, 1925-30, see BI) |
| FIN | --- | Finland (1993-) |
| FJI | --- | Fiji (1971-) |
| FL | --- | Liechtenstein (Fürstentum Liechtenstein, 1923-) |
| FLK | --- | Falkland Islands (?) |
| FM | --- | Federated Malay States (1932-58, see MAL) |
| FR | --- | Faroe Islands (1976-) |
| G | --- | Guatemala (1952-56, see GCA) |
| G | --- | Gabon (1974-) |
| GB | --- | United Kingdom (Great Britain, 1910-) |
| GBA | --- | United Kingdom: Alderney (1924-) |
| GBG | --- | United Kingdom: Guernsey (1924-) |
| GBJ | --- | United Kingdom: Jersey (1924-) |
| GBM | --- | United Kingdom: Isle of Man (1932-) |
| GBY | --- | United Kingdom: Malta (1924-66, see M) |
| GBZ | --- | United Kingdom: Gibraltar (1924-) |
| GCA | --- | Guatemala (Guatemala Central America, 1956-) |
| GE | --- | Georgia (1992-) |
| GF | --- | French Guyana (Guyana Française, ?-) |
| GH | --- | Ghana (1959-) |
| GM | --- | Guam (?) |
| GR | --- | Greece (1913-) |
| GRL | --- | Greenland (?) |
| GUY | --- | Guyana (1972-) |
| H | --- | Hungary (1910-) |
| HK | --- | Hong Kong (1932-) |
| HKJ | --- | Hashemite Kingdom of Jordan (1966-) |
| HO | --- | Honduras (?) |
| HR | --- | Croatia (Hrvatska, ?-) |
| HV | --- | Upper Volta (Haute Volta, 1961-78?, see RHV) |
| I | --- | Italy (1910-) |
| IL | --- | Israel (1952-) |
| IN | --- | Dutch Indies/Indonesia (1930-55, see RI) |
| IND | --- | India (1947-) |
| IR | --- | Iran (1936-) |
| IRL | --- | Ireland (1962-) |
| IRQ | --- | Iraq (1930-) |
| IS | --- | Iceland (Ísland, 1936-) |
| J | --- | Japan (1964-) |
| JA | --- | Jamaica (1932-) |
| JO | --- | Johore (1932-48, see FM) |
| JOR | --- | Jordan (1955-66, see HKJ) |
| K | --- | Kampuchea (1956-) |
| KAT | --- | Katanga (1960-62, see ZR) |
| KAZ | --- | Kazakhstan (1992-) |
| KD | --- | Kedah (1932-48, see FM) |
| KE | --- | Kenya (1978?-) |
| KIR | --- | Kiribati (?) |
| KGZ | --- | Kyrgyz Republic (1992-) |
| KL | --- | Kelantan (1932-48, see FM) |
| KO | --- | Korea (north, ?-) |
| KT | --- | Kuwait (1952?-54, see KWT) |
| KWT | --- | Kuwait (1954-) |
| L | --- | Luxembourg (1911-) |
| LAO | --- | Laos (1959-) |
| LAR | --- | Libya (Libian Arab Republic, 1972-) |
| LB | --- | Liberia (1967-) |
| LR | --- | Latvia (Latvija Republik, 1927-40, see SU) |
| LS | --- | Lesotho (1967-) |
| LSA | --- | Lebanon, Syria & Alaouites (1929-31, see SL) |
| LT | --- | Libya (Tripolitania) (1960-71, see LAR) |
| LT | --- | Lithuania (1925-40 + 1991-) |
| LV | --- | Latvia (1991-) |
| M | --- | Israel (Palestine Mandate/Medinat Ysrael, 1930-48, see IL) |
| M | --- | Malta (1966-) |
| MA | --- | Morocco (Al Magrib, 1924-) |
| MAC | --- | Macao (?) |
| MAL | --- | Malaysia (1967-) |
| MAR | --- | Martinique (?) |
| MC | --- | Monaco (1910-) |
| MD | --- | Moldova (1992-) |
| ME | --- | Spanish Morocco (Marruecos Español, 1935-52, see MA) |
| MEX | --- | Mexico (1952-) |
| MK | --- | Macedonia (?) |
| MN | --- | Montenegro (1913-18, see Y) |
| MNG | --- | Mongolia (?) |
| MOC | --- | Mocambique (1932-56 + 1975-) |
| MS | --- | Mauritius (1938-) |
| MT | --- | Tanger (Morocco Tanger, 1933-56, see MA) |
| MU | --- | Mauritania (?-64, see RIM) |
| MW | --- | Malawi (1965-) |
| N | --- | Norway (1922-) |
| NA | --- | Dutch Antilles (Netherlands Antilles, 1957-) |
| NAU | --- | Nauru (1968?-) |
| NDH | --- | Croatia (Nesavisna Država Hrvatska, 1941-45, see Y) |
| NEP | --- | Nepal (1970?-) |
| NF | --- | New Foundland (1938-49, see CA) |
| NGN | --- | Netherlands New Guinea (1955-63, see RI) |
| NIC | --- | Nicaragua (1952-) |
| NIG | --- | Niger (1961-80, see RN) |
| NL | --- | The Netherlands (1910-) |
| NP | --- | Nyasaland (Nyasaland Protectorate, 1938-60, see RNY) |
| NR | --- | Northern Rodesia (1938-60, see RNR) |
| NZ | --- | New Zealand (1958-) |
| OM | --- | Oman (?) |
| P | --- | Portugal (1912-) |
| PA | --- | Panama (1952-) |
| PAK | --- | Pakistan (1947-?, see PK) |
| PAN | --- | Angola (Portuguese Angola, 1932-56, see AN) |
| PE | --- | Peru (1937-) |
| PI | --- | Phillippines (Pilipinas, 1952-78?, see RP) |
| PK | --- | Pakistan (?) |
| PL | --- | Poland (1921-) |
| PNG | --- | Papua New Guinea (1978?-) |
| PR | --- | Persia (1933-36, see IR) |
| PR | --- | Puerto Rico (?-?, see USA) |
| PS | --- | Perlis (1933-48, see FM) |
| PTM | --- | Malaysia (Persekutuan Tanah Malaysia, 1958-67, see MAL) |
| PY | --- | Paraguay (1952-) |
| Q | --- | Qatar (1972-) |
| R | --- | Russia (1910-26, see SU) |
| R | --- | Romania (1930-81, see RO) |
| RA | --- | Argentina (Republica Argentina, 1927-) |
| RB | --- | Bolivia (Republica Bolivia, 1963-67, see BOL) |
| RB | --- | Botswana (Republic Botswana, 1967-) |
| RC | --- | Taiwan (Republic China, 1932-) |
| RCA | --- | Central African Republic (République Centrafricain, 1962-) |
| RCB | --- | Congo Brazzaville (République Congo Brazzaville, 1962-) |
| RCH | --- | Chile (Republica Chili, 1930-) |
| RCL | --- | Congo Leopoldville (République) (1960-70?, see CGO) |
| RE | --- | Réunion (?) |
| RFC | --- | Cameroon (République Federale du Cameroun, ?-) |
| RG | --- | Guinea (République de Guinée, 1972?-) |
| RH | --- | Haiti (République Haiti, 1952-) |
| RHV | --- | Burkina Faso (République Haute Volta, 1978?-) |
| RI | --- | Indonesia (Republic Indonesia, 1955-) |
| RIM | --- | Mauritania (République Islamique de Mauritanie, 1964-) |
| RL | --- | Lebanon (Republic Lebanon, 1952-) |
| RM | --- | Romania (1912-30, see R) |
| RM | --- | Malagasy (Repoblika Demokratika Malagasy, 1962-) |
| RMM | --- | Mali (origin unknown, 1962-) |
| RN | --- | Niger (Republic Niger, 1978?-) |
| RNR | --- | Zambia (Republic North Rhodesia, 1960-66, see Z) |
| RNY | --- | Nyasaland (Republic Nyasaland, 1960-65, see MW) |
| RO | --- | Romania (1981-) |
| ROK | --- | South Korea (Republic of south Korea, 1971-) |
| ROU | --- | Uruguay (Republic of Uruguay, 1978?-) |
| RP | --- | Phillippines (Republica Pilipinas, 1975-) |
| RPB | --- | Benin (République Populaire du Bénin, 1978?-) |
| RSM | --- | Republic of San Marino (1932-) |
| RSR | --- | Zimbabwe (Republic South Rhodesia, 1960-79, see ZM) |
| RU | --- | Burundi (Ruanda Urundi, 1960-) |
| RUC | --- | Cameroon (République Unie du Cameroun, 1982?-?, see RFC) |
| RUS | --- | Russia (RU also does occur, 1992-) |
| RWA | --- | Ruanda (1964-) |
| S | --- | Sweden (1911-) |
| SA | --- | Saarland (1925-35 + 1945-56, see D) |
| SA | --- | Saudi Arabia (1972?-) |
| SAU | --- | South Africa (Suid Afrikaanse Unie, 1933-36, see ZA) |
| SB | --- | Serbia (1911-18, see SHS) |
| SCV | --- | Vatican City (Stato della Citta Vatican, ?-?, see V) |
| SD | --- | Ngwana (Swaziland, 1935-) |
| SE | --- | Ireland (Saorstát Éireann, 1924-38, see EIR) |
| SF | --- | Finland (Suomi/Finland, 1921-93, see FIN) |
| SGP | --- | Singapore (1952-) |
| SHS | --- | Yugoslavia (Kraljevina Srba, Hrvata i Slovenaca, 1926-36, see Y) |
| SK | --- | Serawak (1955-63, see PTM) |
| SK | --- | Slovakia (SQ also does occur, ?-) |
| SL | --- | Syria and Lebanon (1931-52, see SYR and RL) |
| SLB | --- | Solomon Islands (?) |
| SLO | --- | Slovenia (?) |
| SM | --- | Siam (1930-55, see T and VN) |
| SME | --- | Surinam (1936-) |
| SN | --- | Senegal (1962-) |
| SNB | --- | State of North Borneo (1938-55, see CNB) |
| SO | --- | Slovakia (1939-45, see CS) |
| SO | --- | Somalia (1972?-) |
| SP | --- | Somalia (Somaliya Protectorate, 1966?-72?, see SO) |
| SR | --- | South Rodesia (1932-60, see RSR) |
| SS | --- | Straits Settlements (1932-52, see FM and SGP) |
| SU | --- | Soviet Union (1926-?, see ...) |
| SUD | --- | Sudan (1963-) |
| SWA | --- | Namibia (South West Africa, 1935-) |
| SY | --- | Seychelles (1938-) |
| SYR | --- | Syria (1952-) |
| T | --- | Thailand (1955-) |
| TAD | --- | Tadjikstan (1992-) |
| TC | --- | Cameroon (Trust de Cameroon, 1932-52, see CAM) |
| TCH | --- | Chad (Tchad, 1972?-) |
| TD | --- | Trinidad (1938-64, see TT) |
| TG | --- | Togo (1962-) |
| TMN | --- | Turkmenistan (1992-) |
| TN | --- | Tunisia (1957-) |
| TO | --- | Tonga (?) |
| TR | --- | Turkey (1935-) |
| TS | --- | Trieste (1945-54, see I and YU) |
| TT | --- | Togo (Truste de Togo, 1932-62, see TG) |
| TT | --- | Trinidad and Tobago (1964-) |
| TU | --- | Trengganu (1935-48, see FM) |
| U | --- | Uruguay (?-78?, see ROU) |
| UA | --- | Ukraine (1992-) |
| UAE | --- | United Arab Emirates (?) |
| USA | --- | United States of America (1952-) |
| UZB | --- | Uzbekistan (1992-) |
| V | --- | Vatican City (?) |
| VN | --- | Viet Nam (1953-) |
| WAC | --- | Gold Coast (West Africa Gold Coast, 1932-59, see GH) |
| WAG | --- | Gambia (West Africa Gambia, 1932-) |
| WAL | --- | Sierra Leone (West Africa Sierra Leone, 1937-) |
| WAN | --- | Nigeria (West Africa Nigeria, 1937-) |
| WD | --- | Dominica (Windward islands Dominica, 1954-) |
| WG | --- | Granada (Windward islands Granada, 1932-) |
| WL | --- | St. Lucia (Windward islands St. Lucia, 1932-) |
| WS | --- | Western Samoa (1962-) |
| WV | --- | St. Vincent (Windward islands St. Vincent, 1932-) |
| Y | --- | Yugoslavia (1936-52, see YU) |
| YE | --- | Arab Republic of Yemen (?) |
| YAR | --- | Yemen Arab Republic (1972?-?, see YE) |
| YMN | --- | Yemen (?-72?, see YAR) |
| YU | --- | Yugoslavia (1952-) |
| YV | --- | Venezuela (origin unknown, 1955-) |
| Z | --- | Zambia (1966-) |
| ZA | --- | Union of South Africa (Zuid Afrika, 1936-) |
| ZM | --- | Zimbabwe (1979-79, see ZW) |
| ZR | --- | Zaire (1973-80, see ZRE) |
| ZRE | --- | Zaire (1981-) |
| ZW | --- | Zimbabwe (1979-) |
