| year |
first day |
country |
scott # |
agency |
conference |
conference dates |
conference city |
| 1950 | 22-may | italy | 533-534 | unesco | 5th unesco general conference | 22 may-17 jun 1950 | florence |
 |
| 1950 | 15-jul | italy | 538-539 | itu | 2nd international high frequency radio conference | 4 apr -19 aug 1950 | florence and rapallo |
 |
| 1950 | 2-oct | dominican republic | 444-445, c77 | who | 13th pan american sanitary conference | 2-7 oct 1950 | ciudad trijillo |
 |
| 1950 | 17-oct | turkey | 1034-1036 | icao | 2nd icao middle east regional air navigation meeting | 17 oct-7 nov 1950 | istanbul |
 |
| 1951 | 3-dec | turkey | 1054a | un, fao, world bank | un training course on agricultural development for mediterranean countries | oct. - dec. 1951 | ankara |
 |
| 1952 | 3-jan | turkey | 1051-1054 | un, fao, world bank | un training course on agricultural development for mediterranean countries | oct. - dec. 1951 | ankara |
 |
 |
| 1951 | 6-nov | france | 671-672 | un | 6th un general assembly | 6 nov 1952-8 feb 1952 | paris |
 |
| 1952 | 30-apr | brazil | 720 | ilo | 5th ilo regional conference for the americas | 17-29 apr 1952 | petropolis |
 |
| 1952 | 14-may | belgium | 407-417, b514 | upu | 13th universal postal congress | 14 may-11 jul 1952 | brussels |
 |
| 1952 | 29-sep | italy | 611 | icao | diplomatic conference on international air law | 9 sep-6 oct 1952 | rome |
 |
| 1952 | 23-oct | philippines | 578-579 | fao | 4th meeting, indo-pacific fisheries council | 23 oct-7 nov 1952 | quezon city |
 |
| 1952 | 30-oct | colombia | 610, c220 | ecla | 1st conference on iron & steel industry in latin america | oct. 1952 | bogota |
 |
| 1952 | 8-dec | syria | c169-172 | un | un social welfare seminar | 8-20 dec 1952 | damascus |
 |
 |
| 1952 | 10-dec | liberia | 338-340, c70, 340a, c70a | who | 2nd meeeting, who regional committee for africa | 31 jul-7 aug 1952 | monrovia |
 |
 |
 |
 |
| 1953 | 29-jun | belgium | 2v, overprinted tabs | unesco | international conference on the role and place of music in the education of young people and young adults | 29 jun-9 jul 1953 | brussels |
 |
| 1954 | 30-apr | argentina | 622-624 | itu | itu plenipotentiary conference | 10 oct-22 dec 1952 | buenos aires |
 |
| 1954 | 24-may | chile | 288 | who | 14th pan-american sanitary conference | 7-22 oct 1954 | santiago |
 |
| 1954 | 11-dec | india | 253 | fao | 4th world forestry congress | 11-22 dec 1954 | dehra dun |
 |
| 1955 | 12-sep | turkey | 1171-1174 | world bank imf | world bank imf annual meetings | 12-16 sep 1955 | istanbul |
 |
 |
| 1956 | 6-apr | dominican republic | 469-470, c95 | icao | 3rd caribbean icao air navigation conference | 3-24 apr 1956 | ciudad trujillo |
 |
| 1956 | 20-sep | iran | 1051 | who | 6th who regional conference for eastern medierranean | 19-25 sep 1956 | teheran |
 |
| 1957 | 22-may | bolivia | 403-407, c197-201 | ecla | 7th session, ecla | 15-29 may 1957 | la paz |
 |
 |
 |
 |
| 1957 | 14-aug | canada | 371-372 | upu | 14th universal postal congress | 14 aug-3 oct 1957 | ottawa |
 |
| 1957 | 22-oct | iran | 1080 | un | un seminar on topographical mapping as a means of economic development | 14-24 oct 1957 | teheran |
 |
| 1958 | 5-mar | malaya | 85-86 | ecafe | 14th session, ecafe | 5-15 mar 1958 | kuala lumpur |
 |
| 1958 | 25-aug | switzerland | 369 | un | 2nd un conference on the peaceful uses olf atomic energy | 1-14 sep 1958 | geneva |
 |
| 1958 | 10-dec | syria (uar) | 14, c14 | fao | 4th fao near east regional conference | 10-20 dec 1958 | damascus |
 |
| 1958 | 29-dec | ethiopia | c60-c63 | eca | 1st session, eca | 29 dec 1958-6 jan 1959 | addis ababa |
 |
 |
| 1959 | 19-may | panama | 425-426, c218-221, c221a | ecla | 8th session, ecla | 14-23 may 1959 | panama city |
 |
 |
 |
| 1959 | 7-sep | mexico | 906 | ecosoc | 27th session, economic and social council | 7-24 apr 1959 | mexico city |
 |
| 1959 | 2-nov | japan | 684 | gatt | 15th session, contracting parties to gatt | 26 oct-20 nov 1959 | tokyo |
 |
| 1959 | 18-nov | philippines | 807-808 | unwto | 14th general assembly, international union of official travel organizations (unwto predecessor) | 18-26 nov 1959 | manila |
 |
| 1959 | 5-dec | libya | 183-185 | fao | 1st international dates conference | 5-11 dec 1959 | tripoli |
 |
 |
