מוצג עכשיו ריו דה אורו - בולי דואר (1920 - 1921) - 13 בולים.
1921
King Alfonso XIII - Blue Control on Back side
WM: אף לא אחד נקוב: 13
![[King Alfonso XIII - Blue Control on Back side, סוג T]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T1]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T1-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T2]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T2-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T3]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T3-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T4]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T4-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T5]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T5-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T6]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T6-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T7]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T7-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T8]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T8-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T9]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T9-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T10]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T10-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T11]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T11-s.jpg)
![[King Alfonso XIII - Blue Control on Back side, סוג T12]](https://www.stampworld.com/media/catalogue/Rio-de-Oro/Postage-stamps/T12-s.jpg)
| מס. | סוג | D | צבע | תיאור |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 134 | T | 1C | צהוב | 0.88 | - | 1.17 | - | USD |
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| 135 | T1 | 2C | חום אדמדם | 0.88 | - | 1.17 | - | USD |
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| 136 | T2 | 5C | ירוק כחלחל | 0.88 | - | 1.17 | - | USD |
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| 137 | T3 | 10C | סלמון | 0.88 | - | 1.17 | - | USD |
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| 138 | T4 | 15C | ירוק כהה | 0.88 | - | 1.17 | - | USD |
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| 139 | T5 | 20C | כחול בהיר | 0.88 | - | 1.17 | - | USD |
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| 140 | T6 | 25C | כחול עז | 0.88 | - | 1.17 | - | USD |
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| 141 | T7 | 30C | ורוד | 1.17 | - | 2.35 | - | USD |
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| 142 | T8 | 40C | סגול כחלחל | 1.17 | - | 2.35 | - | USD |
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| 143 | T9 | 50C | כתום | 1.17 | - | 2.35 | - | USD |
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| 144 | T10 | 1Pta | סגול ורדרד | 4.70 | - | 11.74 | - | USD |
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| 145 | T11 | 4Pta | סגול אדמדם | 9.39 | - | 14.09 | - | USD |
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| 146 | T12 | 10Pta | חום | 14.09 | - | 29.35 | - | USD |
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| 134‑146 | 37.85 | - | 70.42 | - | USD |
