Praegu kuvatakse: Rio de Oro - postmargid (1905 - 1909) - 9 margid.
WM: mitte ükski perforatsioon: 14
![[No. 12 & 25 Handstamp Surcharged, Tüüp E]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/E-s.jpg)
![[No. 12 & 25 Handstamp Surcharged, Tüüp E1]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/E1-s.jpg)
WM: mitte ükski perforatsioon: 14
![[No. 22 Handstamp Surcharged - Not Issued, Tüüp F]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/F-s.jpg)
WM: mitte ükski perforatsioon: 14
![[Nos. 26 & 27 Handstamped "HABILITADO - PARA - 15 CENTS", Tüüp G]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/G-s.jpg)
![[Nos. 26 & 27 Handstamped "HABILITADO - PARA - 15 CENTS", Tüüp G1]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/G1-s.jpg)
WM: mitte ükski perforatsioon: Imperforated
![[Handstamped "RIO DE ORO - HABILITADO - PARA - CORREOS - 5 CENS", Tüüp H]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/H-s.jpg)
![[Handstamped "RIO DE ORO - HABILITADO - PARA - CORREOS - 5 CENS", Tüüp H1]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/H1-s.jpg)
| Nr | Tüüp | D | Värv | Kirjeldus |
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| 42 | H | 5/50C | roheline | Carmine overprint | 62,43 | - | 31,22 | - | USD |
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| 42A | H1 | 5/50C | roheline | Violet overprint | 104 | - | 52,02 | - | USD |
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| 42B | H2 | 5/50C | roheline | Carmine overprint - Control Number on Back Side | 208 | - | 62,43 | - | USD |
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| 42C | H3 | 5/50C | roheline | Violet overprint - Control Number on Back Side | 312 | - | 104 | - | USD |
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