ただいま表示中： コスタリカ - 郵便切手 (1990 - 1999) - 10 切手.
25. 3月 WM: なし ミシン目: 10½
![[Airmail - Paintings in National Theatre, タイプ AKG]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKG-s.jpg)
24. 5月 WM: なし ミシン目: 10½
![[The 50th Anniversary of Costa Rica-Panama Boundary Treaty, タイプ AKH]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKH-s.jpg)
![[The 50th Anniversary of Costa Rica-Panama Boundary Treaty, タイプ AKI]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKI-s.jpg)
![[The 50th Anniversary of Costa Rica-Panama Boundary Treaty, タイプ AKJ]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKJ-s.jpg)
![[Airmail - National Stamp Exhibition "Exfilcori '91" - Costa Rica - Issue of 1990 Overprinted "Aereo EXFILCORI '91", タイプ AKK]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKK-s.jpg)
11. 10月 WM: なし
![[Airmail - The 100th Anniversary of Basketball, タイプ AKL]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKL-s.jpg)
11. 10月 WM: なし ミシン目: 13
![[The 500th Anniversary (1992) of Discovery of America by Columbus, タイプ AKM]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKM-s.jpg)
21. 10月 WM: なし
![[Issue of 1984 and 1988 Surcharged, タイプ AKO]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKO-s.jpg)
![[Issue of 1984 and 1988 Surcharged, タイプ AKO1]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKO1-s.jpg)
1. 11月 WM: なし ミシン目: 13¼
![[Airmail - The 50th Anniversary of Social Security Administration, タイプ AKN]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/AKN-s.jpg)
