| year |
first day |
country |
scott # |
agency |
conference |
conference dates |
conference city |
| 1990 | 17-aug | cuba | 3248 | un | 8th un conference on the prevention of crime and treatment of offenders | 27 aug-7 sep 1990 | havana |
 |
| 1991 | 5-jun | brazil | 2315 | un | un conference on environment and development | 1-12 jun 1992 | rio de janiero |
 |
| 1991 | 22-sep | france | 2265 | fao | 10th world forestry congress | 17-26 sep 1991 | paris |
 |
| 1991 | 15-oct | thailand | 1406-1409, 1409a | world bank imf | world bank imf annual meetings | 15-17 oct 1991 | bangkok |
 |
 |
| 1992 | 8-feb | colombia | c846 | unctad | 8th unctad | 8-25 feb 1992 | cartagena de indias |
 |
| 1992 | 25-feb | brazil | 2352-2353 | un | un conference on environment and development | 1-12 jun 1992 | rio de janiero |
 |
| 1992 | 2-mar | japan | 2131 | unep | 8th conference of the parties to the un convention on international traffic in endangered species (cites) | 2-13 mar 1992 | kyoto |
 |
| 1992 | 6-apr | mexico | 1723 | itu | americas telecom 92 | 6-11 apr 1992 | acapulco |
 |
| 1992 | 17-may | iran | 2495 | fao | 21st fao regional conference for the near east | 17-21 may 1992 | teheran |
 |
| 1992 | 2-jun | brazil | 2363-2366 | un | un conference on environment and development | 1-12 jun 1992 | rio de janiero |
 |
 |
| 1992 | 3-jun | brazil | 2367-2369 | un | un conference on environment and development | 1-12 jun 1992 | rio de janiero |
 |
| 1992 | 4-jun | brazil | 2373a | un | un conference on environment and development | 1-12 jun 1992 | rio de janiero |
 |
| 1992 | 5-jun | brazil | 2374-2377 | un | un conference on environment and development | 1-12 jun 1992 | rio de janiero |
 |
 |
| 1992 | 23-jun | iran | 2517 | escap | meeting of ministers of industry and technology | 28-29 jun 1992 | teheran |
 |
| 1992 | 22-aug | south korea | 1681-1682, 1681a-1682a | upu | 21st universal postal congress | 22 aug-14 sep 1994 | seoul |
 |
 |
 |
| 1992 | 28-sep | uruguay | 1423 | fao | 22nd fao regional conference for latin america and the caribbean | 28 sep - 2 oct 1992 | montevideo |
 |
| 1992 | 16-oct | italy | 1916 | fao | international conference on nutrition | 5-11 dec 1992 | rome |
 |
| 1992 | 6-oct | hungary | 3360 | itu | europa telecom 92 | 12-17 oct 1992 | budapest |
 |
| 1992 | 2-nov | tunisia | 1016 | un | regional meeting for africa of the world conference on human rights | 2-6 nov 1992 | tunis |
 |
| 1993 | 11-jun | austria | 1622 | un | world conference on human rights | 14-25 jun 1993 | vienna |
 |
| 1993 | 4-oct | indonesia | 1553-1555, 1556 | unwto | 10th general assembly, world tourism organization | 4-8 oct 1993 | bali |
 |
 |
| 1993 | 18-nov | south korea | 1746-1747, 1746a-1747a | upu | 21st universal postal congress | 22 aug-14 sep 1994 | seoul |
 |
 |
 |
| 1994 | 1-jan | benin | 729-31 | unesco | 1st session, international scientific committee on the slave route | sep 1994 | ouidah |
| 1994 | 24-jan | south korea | 1765, 1765a | upu | 21st universal postal congress | 22 aug-14 sep 1994 | seoul |
 |
 |
| 1994 | 25-apr | barbados | 865-868 | un | 1st un conference on small island developing states | 25 apr-6 may 1994 | bridgetown |
 |
 |
| 1994 | 26-apr | egypt | 1554 | itu | africa telecom 94 | 25-29 apr 1994 | cairo |
 |
| 1994 | 29-apr | morocco | 773-4, 774a | gatt | gatt ministerial meeting | 12-15 apr 1994 | marrakech |
 |
 |
| 1994 | 23-may | japan | 2241 | un | world conference on natural disaster reduction | 23-27 may 1994 | yokohama |
 |
| 1994 | 13-jun | indonesia | 1576 | un | 2nd asian and pacific ministerial conference on women in development | 7-14 jun 1994 | jakarta |
 |
| 1994 | 6-aug | japan | 2401 | who | 10th international conference on aids | 7-11 aug 1994 | yokohama |
 |
| 1994 | 22-aug | south korea | 1792-1795, aerogram | upu | 21st universal postal congress | 22 aug-14 sep 1994 | seoul |
 |
 |
 |
| 1994 | 22-aug | south korea | 5 ss | upu | 21st universal postal congress | 22 aug-14 sep 1994 | seoul |
 |
 |
 |
 |
 |
| 1994 | 22-aug | south korea | 4 postal cards | upu | 21st universal postal congress | 22 aug-14 sep 1994 | seoul |
  |
  |
| 1994 | 5-sep | egypt | 1562-1563 | un | international conference on population and development | 5-13 sep 1994 | cairo |
 |
| 1994 | 19-sep | japan | 2425 | itu | itu plenipotentiary conference | 19 sep-14 oct 1994 | kyoto |
 |
| 1994 | 22-nov | botswana | postal card | wmo | 11ith session, wmo regional association for africa | 14-25 nov 1994 | gaborone |
 |
| 1995 | 9-mar | germany | 1884 | un | 1st conference of the parties to the un framework convention on climate change | 28 mar-7 apr 1995 | berlin |
 |
| 1995 | 4-sep | china | 2607-2610 | un | 4th world conference on women | 4-15 sep 1995 | beijing |
 |
| 1995 | 5-sep | switzerland | 964 | itu | telecom 95 | 3-11 oct 1995 | geneva |
 |
| 1995 | 20-sep | poland | postal card | ilo | 5th european regional ilo conference | 20-27 sep 1995 | warsaw |
 |
| 1996 | 8-may | canada | 1603 | who | 11th international conference on aids | 7-12 jul 1996 | vancouver |
 |
| 1996 | 3-jun | turkey | 2646 | un | 2nd un conference on human settlements | 3-14 jun 1996 | istanbul |
 |
| 1996 | 10-jun | brazil | 2591 | itu | americas telecom 96 | 10-15 jun 1996 | rio de janiero |
 |
| 1996 | 18-jul | china | 2530a | upu | 22nd universal postal congress | 23 aug-15 sep 1999 | beijing |
 |
| 1996 | 20-nov | singapore | 770-773 | wto | 1st wto ministerial conference | 9-13 dec 1996 | singapore |
 |
| 1997 | 15-apr | zimbabwe | 774-779 | un | 10th conference of the parties to cites | 8-20 jun 1997 | harare |
 |
| 1997 | 16-apr | belarus | 210a | un | international conference on sustainable development of countries with economies in transition | 16-18 apr 1997 | minsk |
 |
| 1997 | | china | 4 postal cards | upu | 22nd universal postal congress | 23 aug-15 sep 1999 | beijing |
  |
  |
| 1997 | 21-sep | hong kong | 799-802 | world bank imf | world bank imf annual meetings | 17-25 sep 1997 | hong kong |
 |
| 1997 | 13-oct | turkey | 2686 | fao | 11ith world forestry congress | 13-22 oct 1997 | antalya |
 |
| 1997 | 20-oct | china | 2805 | upu | 22nd universal postal congress | 23 aug-15 sep 1999 | beijing |
 |
| 1997 | 1-dec | japan | 2599a | un | 3rd conference of the parties to the un framework convention on climate change | 1-7 dec 1997 | kyoto |
 |
| 1998 | 15-may | china | 2868-2869 | upu | 22nd universal postal congress | 23 aug-15 sep 1999 | beijing |
 |
| 1998 | | china | 4 postal cards | upu | 23rd universal postal congress | 24 aug-15 sep 1999 | beijing |
  |
  |
| 1998 | | china | 4 postal cards | upu | 23rd universal postal congress | 24 aug-15 sep 1999 | beijing |
  |
  |
| 1998 | 4-sep | monaco | 2093 | iaea | international symposium on marine pollution | 5-9 oct 1998 | monaco |
 |
| 1999 | 3-may | hungary | 3652a | unesco | world science conference | 26 jun-1 jul 1999 | budapest |
 |
| 1999 | 19-jun | malaysia | 699-701 | who | 5th international congress on aids in asia and the pacific | 23-27 oct 1999 | kuala lumpur |
 |
| 1999 | 7-jul | un-vienna | 258a, 259 | un | 3rd un conference on the exploration and peaceful uses of outer space | 19-30 jul 1999 | vienna |
 |
 |
| 1999 | 23-aug | china | 2969-2970, 2671 | upu | 22nd universal postal congress | 23 aug-15 sep 1999 | beijing |
 |
 |
| 1999 | | china | 4 postal cards | upu | 22nd universal postal congress | 23 aug-15 sep 1999 | beijing |
  |
  |
| 1999 | 13-oct | uruguay | 1823 | unesco | 3rd international conference of ministers and senior officials responsible for physical education and sport | 30 nov - 3 dec 1999 | punta del este |
