Muri Bhalissa: Urugwaj - Bolol tal-posta (1930 - 1939) - 14 bolol.
WM: Xejn Inċiżjoni: Imprenta Nacional, Montevideo. Perforazzjoni: 12½
![[Rio Negro Dam, Tip IQ]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IQ-s.jpg)
![[Rio Negro Dam, Tip IQ1]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IQ1-s.jpg)
![[Rio Negro Dam, Tip IQ2]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IQ2-s.jpg)
![[Rio Negro Dam, Tip IQ3]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IQ3-s.jpg)
WM: Xejn Inċiżjoni: Imprenta Nacional, Montevideo. Perforazzjoni: 12½
![[Airmail - Rio Negro Dam, Tip IR]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR-s.jpg)
![[Airmail - Rio Negro Dam, Tip IR1]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR1-s.jpg)
![[Airmail - Rio Negro Dam, Tip IR2]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR2-s.jpg)
![[Airmail - Rio Negro Dam, Tip IR3]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR3-s.jpg)
![[Airmail - Rio Negro Dam, Tip IR4]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR4-s.jpg)
![[Airmail - Rio Negro Dam, Tip IR5]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR5-s.jpg)
![[Airmail - Rio Negro Dam, Tip IR6]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR6-s.jpg)
![[Airmail - Rio Negro Dam, Tip IR7]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR7-s.jpg)
![[Airmail - Rio Negro Dam, Tip IR8]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR8-s.jpg)
![[Airmail - Rio Negro Dam, Tip IR9]](https://www.stampworld.com/media/catalogue/Uruguay/Postage-stamps/IR9-s.jpg)
| Le. | Tip | D | Kulur | Deskrizzjoni |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 573 | IR | 8C | aħdar ċar | (200.600) | 0.52 | - | 0.52 | - | USD |
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| 574 | IR1 | 20C | aħdar | (50.000) | 0.52 | 5.20 | 3.12 | - | USD |
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| 575 | IR2 | 20C | aħdar | (10.000) | 1.56 | - | 1.04 | - | USD |
|
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| 576 | IR3 | 62C | blu ħadrani | (300.000) | 8.32 | - | 6.24 | - | USD |
|
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| 577 | IR4 | 68C | isfar | (50.000) | 0.78 | - | 0.26 | - | USD |
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| 578 | IR5 | 68C | vjola kannella | (50.000) | 1.56 | - | 1.04 | - | USD |
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| 579 | IR6 | 75C | vjola | (5.000) | 6.24 | - | 6.24 | - | USD |
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| 580 | IR7 | 1P | karminju | (50.000) | 2.08 | - | 1.56 | - | USD |
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| 581 | IR8 | 1.38P | roża | (20.000) | 20.80 | - | 15.60 | - | USD |
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| 582 | IR9 | 3P | blu skur | (20.000) | 15.60 | - | 10.40 | - | USD |
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| 573‑582 | 57.98 | 5.20 | 46.02 | - | USD |
