现在展示： 保加利亚 - 欠资邮票 (1890 - 1899) - 12 邮票.
15. 四月 窗口管理器: 空缺 筛孔: 11½
![[Figure of Value - Big Half-Circle above "3 A", 类型 A16]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-due-stamps/A16-s.jpg)
![[Figure of Value - Big Half-Circle above "3 A", 类型 A18]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-due-stamps/A18-s.jpg)
| 号码 | 类型 | 面值 | 颜色 | 描述 |
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| 12 | A15 | 5St | 橙色 | (300000) | - | 42.01 | 6.30 | - | USD |
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| 12A* | A16 | 5St | 橙色 | Perf: 11 | (300000) | - | 131 | 21.01 | - | USD |
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| 12B* | A17 | 5St | 橙色 | Perf: 10½ | (300000) | - | 52.52 | 6.30 | - | USD |
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| 13 | A18 | 25St | 紫红色 | (300000) | - | 21.01 | 6.30 | - | USD |
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| 13A* | A19 | 25St | 紫红色 | Perf: 11 | (300000) | - | 131 | 31.51 | - | USD |
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| 13B* | A20 | 25St | 紫红色 | Perf: 10½ | (300000) | - | 63.02 | 10.50 | - | USD |
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| 12‑13 | 套 (* Stamp not included in this set) | - | 63.02 | 12.60 | - | USD |
3. 三月 窗口管理器: 空缺 筛孔: 10½-11½
![[Figure of Value - New Design, 类型 B]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-due-stamps/B-s.jpg)
18. 十一月 窗口管理器: 空缺 筛孔: 11½
![[Postage Due Stamps Surcharged, 类型 C]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-due-stamps/C-s.jpg)
![[Postage Due Stamps Surcharged, 类型 C1]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-due-stamps/C1-s.jpg)
13. 三月 窗口管理器: 空缺 筛孔: 13
![[Figure of Value, 类型 D]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-due-stamps/D-s.jpg)
![[Figure of Value, 类型 D1]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-due-stamps/D1-s.jpg)
![[Figure of Value, 类型 D2]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-due-stamps/D2-s.jpg)
