| Year |
First Day |
Country |
Scott # |
Agency |
Conference |
Conference Dates |
Conference City |
| 1960 | 31-Jan | Morocco | 35 | ECA | 2nd Session, ECA | 26 Jan-6 Feb 1960 | Tangier |
 |
| 1960 | 16-Aug | Denmark | 378 | WHO | Session, Regional Committee for Europe | 16-20 Aug 1960 | Copenhagen |
 |
| 1960 | 29-Aug | United States | 1156 | FAO | 5th World Forestry Congress | 29 Aug-9 Sep 1960 | Seattle |
 |
| 1960 | 21-Nov | Viet Nam | 144-145 | FAO | 5th FAO Regional Conference for Asia and Far East | 21-30 Nov 1960 | Saigon |
 |
| 1961 | 10-Apr | Iran | 1169-1170 | UNESCO | International Congress of Music | | Teheran |
 |
| 1961 | 15-May | Yugoslavia | 596 | IAEA | International Conference on Nuclear Electronics | 15-20 May 1961 | Belgrade |
 |
| 1961 | 18-Sep | Austria | 667 | World Bank IMF | World Bank IMF Annual Meetings | 18-22 Sep 1961 | Vienna |
 |
| 1962 | 22-Jan | Senegal | 210 | ITU | Regional Plan Commission for Africa | 22 Jan-2 Feb 1962 | Dakar |
 |
| 1962 | 3-Sep | Madagascar | 333 | UNESCO | Conference on Higher Education in Africa and Madagascar | 3-12 Sep 1962 | Tananarive |
 |
| 1962 | 4-Sep | Iran | 1207-1208 | ECAFE | 2nd ECAFE Symposium on the Development of Petroleum Resources of Asia and the Far East | 1-5 Sep 1962 | Teheran |
 |
| 1962 | 10-Oct | South Korea | 375 | FAO | 10th Session, Indo-Pacific Fisheries Council | 10-25 Oct 1962 | Seoul |
 |
| 1962 | 5-Nov | New Caledonia | 322 | WMO | 3rd session, WMO Region V Association | 5-17 Nov 1962 | Noumea |
 |
| 1963 | 4-Feb | Switzerland | 7O38-39 | UN | UN Conference on the Application of Science and Technology for Development | 4-20 Feb 1963 | Geneva |
 |
| 1963 | 4-Jun | United States | 1231 | FAO | World Food Congress | 4-18 Jun 1963 | Washington |
 |
| 1963 | 21-Aug | Italy | 878-879 | UN | UN Conference on International Tourism and Travel | 21 Aug-5 Sep 1963 | Rome |
 |
| 1963 | 26-Aug | Papua New Guinea | Aerogram | WHO | 14th Meeting, WHO Western Pacific Regional Committee | 5-10 Sep 1963 | Port Moresby |
 |
| 1964 | 2-Mar | Iran | 1282 | ECAFE | 20th Session, ECAFE | 2-17 Mar 1964 | Teheran |
 |
| 1964 | 14-Apr | Malta | 298-299 | FAO | Anti-Brucellosis Congress | 8-13 Jun 1964 | Valletta |
 |
| 1964 | 12-May | Afghanistan | 678 | UN | UN Human Rights Seminar | May 1964 | Kabul |
 |
| 1964 | 15-Jun | Austria | 729-736 | UPU | 15th Universal Postal Congress | 29 May-11 Jul 1964 | Vienna |
 |
 |
 |
 |
| 1964 | | Austria | 4 postal cards | UPU | 15th Universal Postal Congress | 29 May-11 Jul 1964 | Vienna |
  |
 |
| 1964 | | Austria | 4 postal cards | UPU | 15th Universal Postal Congress | 29 May-11 Jul 1964 | Vienna |
  |
 |
| 1964 | 7-Sep | Japan | 820 | World Bank IMF | World Bank IMF Annual Meetings | 7-11 Sep 1964 | Tokyo |
 |
| 1964 | 26-Oct | Ecuador | 720-721, C727-428, C428a | FAO | FAO Banana Conference | Oct-Nov 1964 | Quito |
 |
 |
 |
| 1964 | 16-Nov | Iran | 1308-1309 | UN | UN Petrochemical Conference and Gas Seminar | Nov-Dec 1964 | Teheran |
 |
| 1965 | 1-Mar | Iran | 1317-1318 | UN | 18th Session UN Commission on the Status of Women | 1-18 Mar 1965 | Teheran |
 |
| 1965 | 8-Sep | Iran | 1346-1350 | UNESCO | World Congress on the Eradication of Illiteracy | 8-19 Sep 1965 | Teheran |
 |
| 1965 | 14-Sep | Switzerland | 471-472 | ITU | ITU Plenipotentiary Conference | 14 Sep-12 Nov 1965 | Montreux |
 |
| 1965 | 21-Sep | Japan | 848 | IAEA | 9th IAEA General Conference | 21-28 Sep 1965 | Tokyo |
 |
| 1965 | 21-Oct | Bulgaria | 1422 | UNESCO | 1st Balkan Film Festival | | Varna |
 |
| 1965 | 27-Dec | Iraq | 393-395 | FAO | 2nd International Dates Conference | Dec 1965 | Baghdad |
 |
| 1966 | 23-Feb | Russia | 3150 | UNESCO | 2nd International Oceanographic Congress | 30 May-9 Jun 1966 | Moscow |
 |
| 1966 | 30-May | Hungary | 1767 | UNESCO | 172nd Session, Executive Council | 30-31 May 1966 | Budapest |
 |
| 1966 | 8-Jun | Spain | 1363 | FAO | 6th World Forestry Congress | 6-18 Jun 1966 | Madrid |
 |
| 1966 | 26-Aug | Bulgaria | 1516 | UNESCO | 1st Congress of Balkanologists | | Sofia |
 |
| 1966 | 12-Sep | Tunisia | 464-466, 466a | UNESCO | 2nd UN Regional Cartographic Conference for Africa | 14-24 Sep 1966 | Tunis |
  |
| 1966 | 10-Oct | Kuwait | 335-336 | FAO | FAO Fisheries Conference of the Near East Countries | 10-15 Oct 1966 | Kuwait |
 |
| 1966 | 2-Dec | Cuba | 1173-1175 | UNESCO | International Leisure Time & Recreation Seminar (Cuban National Commission for UNESCO) | | |
 |
 |
| 1967 | 25-Sep | Brazil | 1058 | World Bank IMF | World Bank IMF Annual Meetings | 25-29 Sep 1967 | Rio de Janeiro |
 |
| 1967 | 13-Oct | Colombia | 772-773, C495-497, C496a | UPU | 9th Management Council, Consultative Committee on Postal Studies | 11-27 Oct 1967 | Bogota |
 |
 |
 |
| 1967 | 15-Nov | Mexico | C332 | ITU | 2nd CCITT/CCIR World Plan Commission | 30 Oct-15 Nov 1967 | Mexico City |
 |
| 1967 | 29-Nov | Greece | 904 | UNIDO | International Symposium on Industrial Development | 29 Nov-20 Dec 1967 | Athens |
 |
| 1968 | 1-Feb | India | 463 | UNCTAD | 2nd UNCTAD | 1 Feb-29 Mar 1968 | New Delhi |
 |
| 1968 | 17-Apr | Australia | Aerogram | ECAFE | 24th Session, ECAFE | 17-30 Apr 1968 | Canberra |
 |
| 1968 | 5-May | Iran | 1474 | UN | International Conference on Human Rights | 22 Apr-13 May 1968 | Teheran |
 |
| 1968 | 29-Aug | Malaysia | 53-55 | UNCTAD | Natural Rubber Conference | 27 Aug-5 Sep 1968 | Kuala Lumpur |
 |
| 1968 | 30-Jun | Russia | 3483-3484, Stamped envelope | UPU | Session, Consultative Committee on Postal Studies | 20 Sep-5 Oct 1968 | Moscow |
 |
 |
| 1968 | 19-Oct | Argentina | 865, C113-4 | ITU | 4th Plenary Assembly, CCITT | 23 Sep-25 Oct 1968 | Mar del Plata |
 |
 |
| 1968 | 21-Oct | Malta | 394-396 | FAO | 6th FAO Regional Conference for Europe | 28-31 Oct 1968 | Paola |
 |
| 1969 | 15-Apr | Singapore | 96-98 | ECAFE | 25th Session, ECAFE | 15-28 Apr 1969 | Singapore |
 |
| 1969 | 10-Jun | Switzerland | 3O103 | ILO | 53rd Session, International Labor Conference (Visit of Pope) | 4-26 Jun 1969 | Geneva |
 |
| 1969 | 1-Oct | Japan | 1012-1015 | UPU | 16th Universal Postal Congress | 1 Oct-14 Nov 1969 | Tokyo |
 |
 |
