Muri Bhalissa: Rio de Oro - Bolol tal-posta (1905 - 1909) - 9 bolol.
WM: Xejn Perforazzjoni: 14
![[No. 12 & 25 Handstamp Surcharged, Tip E]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/E-s.jpg)
![[No. 12 & 25 Handstamp Surcharged, Tip E1]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/E1-s.jpg)
WM: Xejn Perforazzjoni: 14
![[No. 22 Handstamp Surcharged - Not Issued, Tip F]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/F-s.jpg)
WM: Xejn Perforazzjoni: 14
![[Nos. 26 & 27 Handstamped "HABILITADO - PARA - 15 CENTS", Tip G]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/G-s.jpg)
![[Nos. 26 & 27 Handstamped "HABILITADO - PARA - 15 CENTS", Tip G1]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/G1-s.jpg)
WM: Xejn Perforazzjoni: Imperforated
![[Handstamped "RIO DE ORO - HABILITADO - PARA - CORREOS - 5 CENS", Tip H]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/H-s.jpg)
![[Handstamped "RIO DE ORO - HABILITADO - PARA - CORREOS - 5 CENS", Tip H1]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/H1-s.jpg)
| Le. | Tip | D | Kulur | Deskrizzjoni |
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| 42 | H | 5/50C | aħdar | Carmine overprint | 61.54 | - | 30.77 | - | USD |
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| 42A | H1 | 5/50C | aħdar | Violet overprint | 102 | - | 51.28 | - | USD |
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| 42B | H2 | 5/50C | aħdar | Carmine overprint - Control Number on Back Side | 205 | - | 61.54 | - | USD |
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| 42C | H3 | 5/50C | aħdar | Violet overprint - Control Number on Back Side | 307 | - | 102 | - | USD |
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