Muri Bhalissa: Bolivja - Bolol tal-posta (1920 - 1929) - 7 bolol.
1924
Airmail - Establishment of the National Aviation School
December WM: Xejn Inċiżjoni: Perkins, Bacon & Co. Perforazzjoni: 14
![[Airmail - Establishment of the National Aviation School, Tip AV]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/AV-s.jpg)
![[Airmail - Establishment of the National Aviation School, Tip AV1]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/AV1-s.jpg)
![[Airmail - Establishment of the National Aviation School, Tip AV2]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/AV2-s.jpg)
![[Airmail - Establishment of the National Aviation School, Tip AV3]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/AV3-s.jpg)
![[Airmail - Establishment of the National Aviation School, Tip AW]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/AW-s.jpg)
![[Airmail - Establishment of the National Aviation School, Tip AW1]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/AW1-s.jpg)
![[Airmail - Establishment of the National Aviation School, Tip AW2]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/AW2-s.jpg)
| Le. | Tip | D | Kulur | Deskrizzjoni |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 142 | AV | 10C | oranġjo ħamrani/iswed | (150.000) | - | 0.52 | 0.52 | - | USD |
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| 143 | AV1 | 15C | karminju/iswed | (140.000) | - | 1.56 | 1.04 | - | USD |
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| 144 | AV2 | 25C | blu/iswed | (42.000) | - | 0.78 | 0.52 | - | USD |
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| 145 | AV3 | 50C | oranġjo isfar/iswed | (21.500) | - | 8.32 | 4.16 | - | USD |
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| 146 | AW | 1B | kannella ħamrani/iswed | (48.000) | - | 2.08 | 1.56 | - | USD |
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| 147 | AW1 | 2B | kannella iswed/iswed | (20.000) | - | 15.61 | 8.32 | - | USD |
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| 148 | AW2 | 5B | vjola/iswed | (10.000) | - | 15.61 | 12.49 | - | USD |
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| 142‑148 | - | 44.48 | 28.61 | - | USD |
