Now showing: Czechoslovakia - Postage-due stamps (1919 - 1971) - 10 stamps.
10. leden WM: Žádný Perforation: 14
![[Postage Stamp Overprinted in Blue, type I]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-due-stamps/I-s.jpg)
17. leden WM: Žádný Perforation: 14
![[Postage Stamps of 1920 Overprinted & Surcharged, type J]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-due-stamps/J-s.jpg)
![[Postage Stamps of 1920 Overprinted & Surcharged, type J1]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-due-stamps/J1-s.jpg)
![[Postage Stamps of 1920 Overprinted & Surcharged, type J3]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-due-stamps/J3-s.jpg)
| No. | Typ | D | Color | Description |
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| 48 | J | 40/185(H) | orange | (7,25 mill) | 0.26 | - | 0.26 | - | USD |
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| 49 | J1 | 50/150(H) | carmine | (3,93 mill) | 0.79 | - | 0.26 | - | USD |
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| 49A* | J2 | 50/150(H) | carmine | Perf: 13¾ | (3,93 mill) | 31.42 | - | 4.19 | - | USD |
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| 50 | J3 | 60/185(H) | orange | (3,05 mill) | 0.79 | - | 0.26 | - | USD |
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| 48‑50 | Set (* Stamp not included in this set) | 1.84 | - | 0.78 | - | USD |
24. září WM: Žádný Perforation: 14
![[Postage Stamps of 1970 Overprinted & Surcharged, type K]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-due-stamps/K-s.jpg)
![[Postage Stamps of 1970 Overprinted & Surcharged, type K1]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-due-stamps/K1-s.jpg)
![[Postage Stamps of 1970 Overprinted & Surcharged, type K2]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-due-stamps/K2-s.jpg)
26. září WM: Žádný Perforation: Imperforated
![[No. 12 Surcharged, type L]](https://www.stampworld.com/media/catalogue/Czechoslovakia/Postage-due-stamps/L-s.jpg)
