Stamps of United Nations, 5 base month
51 to 100 of 206
postage
1992, May 22 2nd U.N. Conference on Environment and Development issue unwmk (no perf info)
| - | 29c | multi |
1993, May 7 45th Anniversary of WHO issue
| - | 29c | multi | ||||
| - | 50c | multi |
1993, May 7 1993 issue
| - | 5c | multi | .20 | .20 |
1994, May 24 International Decade for Natural Disaster Reduction issue
| - | 29c | multi | ||||
| - | 29c | multi | ||||
| - | 29c | multi | ||||
| - | 29c | multi |
1995, May 26 10th Anniversary of International Youth Year issue
| - | 32c | multi | ||||
| - | 55c | multi |
1997, May 30 5th Anniversary of United Nations Conference on Environment and Development issue (5 stamps)
| - | 32c | multi | ||||
| - | 32c | multi | ||||
| - | 32c | multi | ||||
| - | 32c | multi | ||||
| - | $1.00 | multi |
1998, May 20 International Year of the Ocean issue (12 stamps)
2000, May 30 Our World 2000 issue
| - | 33c | multi | "Crawling Toward the Millennium" | |||
| - | 60c | multi | "Crossing" - Masakazu Takahata |
2001, May 25
| - | 7c | multi | Helianthus annuus | .20 | .20 |
2001, May 25 flags (1980) (8 stamps)
2001, May 25
| - | 34c | multi | Rosa sp. |
2002, May 20 East Timor independence issue
| - | 34c | multi | ||||
| - | 57c | multi |
2002, May 24 International Year of Mountains issue
| - | 34c | multi | Mount Kilimanjaro summit, by Shirakawa | — | — | |
| - | 34c | multi | Khan-Tengri - Kyrgyzstan | — | — | |
| - | 80c | multi | Paine Grande | — | — | |
| - | 80c | multi | Mt. Foraker | — | — |
2006, May 27 International Day of Families issue
| - | 39c | multi | ||||
| - | 84c | multi |
2007, May 3 Flags and Coins 2007 issue - flags and coins
| - | 39c | multi | flag of Brazil & coin of Brazil | |||
| - | 39c | multi | flag of Thailand & coin of Thailand | |||
| - | 39c | multi | flag of India & coin of India |
51 to 100 of 206