Tšekkoslovakia
Näytetään: Tšekkoslovakia - Postimaksumerkit (1918 - 1992) - 1 postimerkit.
1968
The 23rd International Geological Congress, Prague
8. elokuu VM: Ei mitään Design: Lukavský Jaroslav Kaiverrus: Housa Bedřich Perforaatio: 11½
![[The 23rd International Geological Congress, Prague, tyyppi AVH]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/AVH-s.jpg)
![[The 23rd International Geological Congress, Prague, tyyppi AVI]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/AVI-s.jpg)
![[The 23rd International Geological Congress, Prague, tyyppi AVJ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/AVJ-s.jpg)
![[The 23rd International Geological Congress, Prague, tyyppi AVK]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/AVK-s.jpg)
![[The 23rd International Geological Congress, Prague, tyyppi AVL]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Czechoslovakia/Postage-stamps/AVL-s.jpg)
| No. | Tyyppi | D | Väri | Kuvaus |
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| 1806 | AVH | 30H | monivärinen | Adrspach Rocks and Hypophylloceras bizonatum (Ammonite) | (4.810.000) | 0,27 | - | 0,27 | - | USD |
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| 1807 | AVI | 60H | monivärinen | Basalt Columns and Fossilised Frog | (4.690.000) | 0,27 | - | 0,27 | - | USD |
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| 1808 | AVJ | 80H | monivärinen | Bohemian Paradise and Agate | (2.710.000) | 0,27 | - | 0,27 | - | USD |
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| 1809 | AVK | 1Kc | monivärinen | Tatra Landscape and Chlamys gigas Shell | (2.990.000) | 0,54 | - | 0,27 | - | USD |
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| 1810 | AVL | 1.60Kc | monivärinen | Barrandien (Bohemia) and Limestone | (650.000) | 1,62 | - | 0,81 | - | USD |
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