Zobrazujú sa: Trieste zóna B - Doplatné známky (1949 - 1950) - 5 známky.
1950
Fish
1. november WM: nikto Perforácia: 12½
![[Fish, typ B]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-due-stamps/B-s.jpg)
![[Fish, typ B1]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-due-stamps/B1-s.jpg)
![[Fish, typ C]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-due-stamps/C-s.jpg)
![[Fish, typ C2]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-due-stamps/C2-s.jpg)
| Číslo | Typ | D | Farba | Popis |
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| 6 | B | 0.50Din | hnedá | Sciaena aquila | - | - | - | - | USD |
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| 7 | B1 | 1Din | olivovo zelená | Sciaena aquila | - | - | - | - | USD |
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| 8 | C | 2Din | tmavo modrá | Engraulis encrasicholus | - | - | - | - | USD |
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| 9 | C1 | 3Din | tmavo modrá | Engraulis encrasicholus | - | - | - | - | USD |
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| 10 | C2 | 5Din | purpurová | Engraulis encrasicholus | - | - | - | - | USD |
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| 6‑10 | - | - | - | - | USD |
