Viser nu Uruguay - Post frimærker (1930 - 1939) - 14 frimærker.
VM: Ingen Gravering: Imprenta Nacional, Montevideo. Perforeringer: 12½
![[Rio Negro Dam, type IQ]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IQ-s.jpg)
![[Rio Negro Dam, type IQ1]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IQ1-s.jpg)
![[Rio Negro Dam, type IQ2]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IQ2-s.jpg)
![[Rio Negro Dam, type IQ3]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IQ3-s.jpg)
VM: Ingen Gravering: Imprenta Nacional, Montevideo. Perforeringer: 12½
![[Airmail - Rio Negro Dam, type IR]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR-s.jpg)
![[Airmail - Rio Negro Dam, type IR1]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR1-s.jpg)
![[Airmail - Rio Negro Dam, type IR2]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR2-s.jpg)
![[Airmail - Rio Negro Dam, type IR3]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR3-s.jpg)
![[Airmail - Rio Negro Dam, type IR4]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR4-s.jpg)
![[Airmail - Rio Negro Dam, type IR5]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR5-s.jpg)
![[Airmail - Rio Negro Dam, type IR6]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR6-s.jpg)
![[Airmail - Rio Negro Dam, type IR7]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR7-s.jpg)
![[Airmail - Rio Negro Dam, type IR8]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR8-s.jpg)
![[Airmail - Rio Negro Dam, type IR9]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR9-s.jpg)
| Nr. | Type | D | Farve | Beskrivelse |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 573 | IR | 8C | Lys grøn | (200.600) | 0,55 | - | 0,55 | - | USD |
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| 574 | IR1 | 20C | Grøn | (50.000) | 0,55 | 5,48 | 3,29 | - | USD |
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| 575 | IR2 | 20C | Grøn | (10.000) | 1,64 | - | 1,10 | - | USD |
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| 576 | IR3 | 62C | Grønlig blå | (300.000) | 8,77 | - | 6,58 | - | USD |
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| 577 | IR4 | 68C | Gul | (50.000) | 0,82 | - | 0,27 | - | USD |
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| 578 | IR5 | 68C | Violet brun | (50.000) | 1,64 | - | 1,10 | - | USD |
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| 579 | IR6 | 75C | Violet | (5.000) | 6,58 | - | 6,58 | - | USD |
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| 580 | IR7 | 1P | Karmin | (50.000) | 2,19 | - | 1,64 | - | USD |
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| 581 | IR8 | 1.38P | Rosa | (20.000) | 21,92 | - | 16,44 | - | USD |
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| 582 | IR9 | 3P | Mørkeblå | (20.000) | 16,44 | - | 10,96 | - | USD |
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| 573‑582 | 61,10 | 5,48 | 48,51 | - | USD |
