Zobrazujú sa: Bolívia - Poštové známky (1950 - 1959) - 10 známky.
9. október WM: nikto Rytina: La Papelera S.A., La Paz. Perforácia: 13½
![[Development of Petroleum Industry, typ HZ]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ-s.jpg)
![[Development of Petroleum Industry, typ HZ1]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ1-s.jpg)
![[Development of Petroleum Industry, typ HZ2]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ2-s.jpg)
![[Development of Petroleum Industry, typ HZ3]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ3-s.jpg)
![[Development of Petroleum Industry, typ HZ4]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ4-s.jpg)
| Číslo | Typ | D | Farba | Popis |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 549 | HZ | 10B | modrá/svetlo modrá | (2.000.000) | 0,29 | - | 0,29 | - | USD |
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| 550 | HZ1 | 35B | karmínová/žltkastá | (2.000.000) | 0,29 | - | 0,29 | - | USD |
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| 551 | HZ2 | 40B | zelená/svetlo zelená | (1.000.000) | 0,29 | - | 0,29 | - | USD |
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| 552 | HZ3 | 50B | purpurová/ružová | (1.000.000) | 0,58 | - | 0,29 | - | USD |
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| 553 | HZ4 | 80B | hnedá/hnedo žltá | (1.000.000) | 0,88 | - | 0,29 | - | USD |
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| 549‑553 | 2,33 | - | 1,45 | - | USD |
9. október WM: nikto Rytina: Litografias Unidas, La Paz. Perforácia: 13½
![[Airmail - Development of Petroleum Industry, typ IA]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA-s.jpg)
![[Airmail - Development of Petroleum Industry, typ IA1]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA1-s.jpg)
![[Airmail - Development of Petroleum Industry, typ IA2]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA2-s.jpg)
![[Airmail - Development of Petroleum Industry, typ IA3]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA3-s.jpg)
![[Airmail - Development of Petroleum Industry, typ IA4]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA4-s.jpg)
| Číslo | Typ | D | Farba | Popis |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 554 | IA | 55B | zelenkasto modrá/svetlo modrá | (1.671.200) | 0,29 | - | 0,29 | - | USD |
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| 555 | IA1 | 70B | tmavo šedá/modrasto šedá | (1.300.000) | 0,58 | - | 0,29 | - | USD |
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| 556 | IA2 | 90B | tmavo zelená/svetlo zelená | (1.300.000) | 0,88 | - | 0,29 | - | USD |
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| 557 | IA3 | 500B | purpurovo ružová/viacfarebná | (250.000) | 3,50 | - | 0,88 | - | USD |
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| 558 | IA4 | 1000B | tmavo hnedá/hnedo žltá | (80.000) | 5,84 | - | 1,75 | - | USD |
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| 554‑558 | 11,09 | - | 3,50 | - | USD |
