Ditunjukkan sekarang: Oman - Setem-setem bayaran pos (1990 - 1999) - 9 Setem-setem.
1. January WM: Tiada Saiz Helaian: 50 Corak: Mahmoud Roushdy Perforasi: 12¾ x 12¼
![[The 5th Anniversary of Gulf Investment Corporation, jenis GN]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/GN-s.jpg)
![[The 5th Anniversary of Gulf Investment Corporation, jenis GN1]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/GN1-s.jpg)
24. March WM: Tiada Saiz Helaian: 50 Corak: Mahmoud Roushdy Ukiran: Oriental Press. Bahrain. Perforasi: 13
![[The 40th Anniversary of Airline "Gulf Air", jenis GO]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/GO-s.jpg)
22. April WM: Tiada Saiz Helaian: 50 Corak: Mahmoud Roushdy Perforasi: 11¼ x 11¾
![[Omani Ophiolite Symposium, jenis GP]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/GP-s.jpg)
![[Omani Ophiolite Symposium, jenis GP1]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/GP1-s.jpg)
30. April WM: Tiada Saiz Helaian: 50 Corak: Mohamed Bin Nizam Shah & Mahmoud Roushdy Perforasi: 13
![[The 150th Anniversary of First Omani Envoy's Journey to U.S.A., jenis GQ]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/GQ-s.jpg)
5. May WM: Tiada Saiz Helaian: 50 Corak: Mahmoud Roushdy Ukiran: Courvoisier. Perforasi: 11½ x 11¾
![[Sultan Qaboos Rose, jenis GR]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/GR-s.jpg)
18. November WM: Tiada Saiz Helaian: 2 Corak: Mohamed bin Nizam Shah & Mahmoud Roushdy Perforasi: 11¾
![[National Day, jenis ]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/0235-b.jpg)
