Now showing: Trieste Zone B - Postage due stamps (1949 - 1950) - 5 stamps.
1950
Fish
1. November WM: None Perforation: 12½
![[Fish, type B]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-due-stamps/B-s.jpg)
![[Fish, type B1]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-due-stamps/B1-s.jpg)
![[Fish, type C]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-due-stamps/C-s.jpg)
![[Fish, type C2]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-due-stamps/C2-s.jpg)
| No. | Type | D | Color | Description |
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| 6 | B | 0.50Din | brown | Sciaena aquila | - | - | - | - | USD |
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| 7 | B1 | 1Din | olive green | Sciaena aquila | - | - | - | - | USD |
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| 8 | C | 2Din | dark blue | Engraulis encrasicholus | - | - | - | - | USD |
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| 9 | C1 | 3Din | dark blue | Engraulis encrasicholus | - | - | - | - | USD |
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| 10 | C2 | 5Din | purple | Engraulis encrasicholus | - | - | - | - | USD |
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| 6‑10 | - | - | - | - | USD |
