Ditunjukkan sekarang: Oman - Setem-setem bayaran pos (1990 - 1999) - 7 Setem-setem.
29. January WM: Tiada Saiz Helaian: 50 Corak: Mohmoud Roushdy Perforasi: 13½ x 13¾
![[Inauguration of Omani-French Museum, Muscat, jenis ]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/0242-b.jpg)
23. March WM: Tiada Saiz Helaian: 50 Corak: Mohmoud Roushdy Ukiran: Oriental Press. Bahrain. Perforasi: 14½
![[World Meteorological Day, jenis GZ]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/GZ-s.jpg)
5. June WM: Tiada Saiz Helaian: 50 Corak: Mohmoud Roushdy Perforasi: 13¼ x 14¼
![[World Environment Day, jenis HA]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HA-s.jpg)
26. September WM: Tiada Saiz Helaian: 50 Corak: Mohamed bin Nizam Shah & Mohmoud Roushdy Perforasi: 13½ x 13¾
![[Welfare of Handicapped Children, jenis HB]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HB-s.jpg)
10. October WM: Tiada Saiz Helaian: 50 Corak: Mohmoud Roushdy Ukiran: Courvoisier. Perforasi: 14½
![[Publication of Sultan Qabus' "Encyclopedia of Arab Names", jenis HC]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HC-s.jpg)
18. November WM: Tiada Saiz Helaian: 50 Corak: Mohmoud Roushdy Perforasi: 13¼ x 13¾
![[National Day and Industry Year, jenis HD]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HD-s.jpg)
![[National Day and Industry Year, jenis HE]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HE-s.jpg)
