Viser nu Bolivia - Post frimærker (1950 - 1959) - 10 frimærker.
9. oktober VM: Ingen Gravering: La Papelera S.A., La Paz. Perforeringer: 13½
![[Development of Petroleum Industry, type HZ]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ-s.jpg)
![[Development of Petroleum Industry, type HZ1]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ1-s.jpg)
![[Development of Petroleum Industry, type HZ2]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ2-s.jpg)
![[Development of Petroleum Industry, type HZ3]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ3-s.jpg)
![[Development of Petroleum Industry, type HZ4]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/HZ4-s.jpg)
| Nr. | Type | D | Farve | Beskrivelse |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 549 | HZ | 10B | Ultramarin/Lyseblå | (2.000.000) | 0,30 | - | 0,30 | - | USD |
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| 550 | HZ1 | 35B | Karmin/Gullig | (2.000.000) | 0,30 | - | 0,30 | - | USD |
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| 551 | HZ2 | 40B | Grøn/Lys grøn | (1.000.000) | 0,30 | - | 0,30 | - | USD |
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| 552 | HZ3 | 50B | Lilla/Rosa | (1.000.000) | 0,59 | - | 0,30 | - | USD |
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| 553 | HZ4 | 80B | Brun/Brunlig gul | (1.000.000) | 0,89 | - | 0,30 | - | USD |
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| 549‑553 | 2,38 | - | 1,50 | - | USD |
9. oktober VM: Ingen Gravering: Litografias Unidas, La Paz. Perforeringer: 13½
![[Airmail - Development of Petroleum Industry, type IA]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA-s.jpg)
![[Airmail - Development of Petroleum Industry, type IA1]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA1-s.jpg)
![[Airmail - Development of Petroleum Industry, type IA2]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA2-s.jpg)
![[Airmail - Development of Petroleum Industry, type IA3]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA3-s.jpg)
![[Airmail - Development of Petroleum Industry, type IA4]](https://www.stampworld.com/media/catalogue/Bolivia/Postage-stamps/IA4-s.jpg)
| Nr. | Type | D | Farve | Beskrivelse |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 554 | IA | 55B | Grønlig blå/Lyseblå | (1.671.200) | 0,30 | - | 0,30 | - | USD |
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| 555 | IA1 | 70B | Mørk grå/Blågrå | (1.300.000) | 0,59 | - | 0,30 | - | USD |
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| 556 | IA2 | 90B | Mørkegrøn/Lys grøn | (1.300.000) | 0,89 | - | 0,30 | - | USD |
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| 557 | IA3 | 500B | Lilla rosa/Flerfarvet | (250.000) | 3,57 | - | 0,89 | - | USD |
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| 558 | IA4 | 1000B | Mørkebrun/Brunlig gul | (80.000) | 5,95 | - | 1,78 | - | USD |
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| 554‑558 | 11,30 | - | 3,57 | - | USD |
