Ditunjukkan sekarang: Oman - Setem-setem bayaran pos (1990 - 1999) - 22 Setem-setem.
22. March WM: Tiada Saiz Helaian: 50 Corak: Mohamed bin Nizam Shah & Mohmoud Roushdy Perforasi: 13½ x 13¾
![[World Water Day, jenis HO]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HO-s.jpg)
16. April WM: Tiada Saiz Helaian: 50 Corak: Mohamed bin Nizam Shah Perforasi: 13½ x 13¼
![[The 70th Anniversary of Muscat Municipality, jenis HP]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HP-s.jpg)
29. August WM: Tiada Saiz Helaian: 50 Corak: Mahmoud Roushdy Perforasi: 13½
![[The 100th Anniversary of International Olympic Committee, jenis HQ]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HQ-s.jpg)
18. November WM: Tiada Saiz Helaian: 40 Corak: Mahmoud Roushdy Ukiran: Paire Perforasi: 13½
![[The 24th National Day and Year of Cultural Heritage, jenis HR]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HR-s.jpg)
![[The 24th National Day and Year of Cultural Heritage, jenis HS]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HS-s.jpg)
7. December WM: Tiada Saiz Helaian: 50 Corak: Mahmoud Roushdy Perforasi: 13½ x 13¾
![[The 50th Anniversary of I.C.A.O., jenis HT]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/HT-s.jpg)
28. December WM: Tiada Saiz Helaian: 60 Corak: Mahmoud Roushdy Ukiran: Courvoisier. Perforasi: 11¾
![[The 250th Anniversary of Al-Busaid Dynasty, jenis ]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/0266-b.jpg)
| No. | Jenis | D | Warna | Deskripsi |
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| 266 | HU | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 267 | HU1 | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 268 | HU2 | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 269 | HU3 | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 270 | HU4 | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 271 | HV | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 272 | HU5 | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 273 | HU6 | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 274 | HU7 | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 275 | HW | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 276 | HX | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 277 | HY | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 278 | HZ | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 279 | IA | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 280 | IB | 50B | pelbagai warna | (100.000) | 1.14 | - | 0.57 | - | USD |
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| 266‑280 | Block of 15 | 56.75 | - | 56.75 | - | USD | |||||||||||
| 266‑280 | 17.10 | - | 8.55 | - | USD |
28. December WM: Tiada Saiz Helaian: 1 Corak: Mahmoud Roushdy Perforasi: Imperforated
![[The 250th Anniversary of Al-Busaid Dynasty, jenis XIB]](https://www.stampworld.com/media/catalogue/Oman/Postage-stamps/XIB-s.jpg)
