Now showing: Poland - Postage stamps (1860 - 2024) - 5705 stamps.
WM: None Perforation: 12 x 12½
![[No. 518-526 Overprinted GROSZY in Different Colors and Fonts, type INT]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INT-s.jpg)
![[No. 518-526 Overprinted GROSZY in Different Colors and Fonts, type INT1]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INT1-s.jpg)
![[No. 518-526 Overprinted GROSZY in Different Colors and Fonts, type INU]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INU-s.jpg)
![[No. 518-526 Overprinted GROSZY in Different Colors and Fonts, type INT2]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INT2-s.jpg)
![[No. 518-526 Overprinted GROSZY in Different Colors and Fonts, type INT3]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INT3-s.jpg)
![[No. 518-526 Overprinted GROSZY in Different Colors and Fonts, type INT4]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INT4-s.jpg)
![[No. 518-526 Overprinted GROSZY in Different Colors and Fonts, type INT5]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INT5-s.jpg)
![[No. 518-526 Overprinted GROSZY in Different Colors and Fonts, type INT6]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INT6-s.jpg)
![[No. 518-526 Overprinted GROSZY in Different Colors and Fonts, type INT7]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INT7-s.jpg)
| No. | Type | D | Color | Description |
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| 638 | INT | 5Gr/Zł | dark green | 518 | 2.09 | - | 3.14 | - | USD |
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| 639 | INT1 | 10Gr/Zł | carmine | 519 | 2.09 | - | 3.14 | - | USD |
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| 640 | INU | 15Gr/Zł | red | 520 | 2.09 | - | 4.19 | - | USD |
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| 641 | INT2 | 15Gr/Zł | blue | 521 | 2.62 | - | 4.19 | - | USD |
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| 642 | INT3 | 20Gr/Zł | dark violet | 522 | 2.62 | - | 4.19 | - | USD |
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| 643 | INT4 | 25Gr/Zł | brown | 523 | 2.09 | - | 4.19 | - | USD |
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| 644 | INT5 | 30Gr/Zł | brown carmine | 524 | 2.09 | - | 4.19 | - | USD |
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| 645 | INT6 | 40Gr/Zł | sepia | 525 | 2.09 | - | 4.19 | - | USD |
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| 646 | INT7 | 50Gr/Zł | blackish olive | 526 | 2.62 | - | 4.19 | - | USD |
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| 638‑646 | 20.40 | - | 35.61 | - | USD |
WM: None Perforation: 10¾-12¾
![[No. 528 Overprinted GROSZY in Different Colors and Fonts, type INV]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INV-s.jpg)
WM: None Perforation: 10¾; 11¼
![[No. 531 Overprinted GROSZY in Different Colors and Fonts, type INW]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INW-s.jpg)
WM: None Perforation: 11¼ x 12
![[No. 529-530 Overprinted GROSZY in Different Colors and Fonts, type INX]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INX-s.jpg)
![[No. 529-530 Overprinted GROSZY in Different Colors and Fonts, type INY]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INY-s.jpg)
WM: None Perforation: 10¾; 11½
![[No. 532-533 Overprinted GROSZY in Different Colors and Fonts, type INZ]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/INZ-s.jpg)
![[No. 532-533 Overprinted GROSZY in Different Colors and Fonts, type IOA]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/IOA-s.jpg)
WM: None Perforation: 12½ x 12¾
![[No. 534 Overprinted GROSZY in Different Colors and Fonts, type IOB]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/IOB-s.jpg)
WM: None Perforation: 10¾; 11¼
![[No. 535 Overprinted GROSZY in Different Colors and Fonts, type IOC]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/IOC-s.jpg)
WM: None Perforation: 12½ x 12¾
![[No. 536 Overprinted GROSZY in Different Colors and Fonts, type IOD]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/IOD-s.jpg)
13. November WM: None Sheetsize: 100 Design: P. Picasso Engraving: B. Brandt Perforation: 12¾:12½
![[The Second World Peace Congress in Warsaw, type KA]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KA-s.jpg)
![[The Second World Peace Congress in Warsaw, type KA1]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KA1-s.jpg)
10. December WM: None Sheetsize: 50 Design: Endre Horvath. Engraving: M.R. Polak, B. Brandt Perforation: 12½:12¾
![[The 100th Anniversary of the Death of General Józef Bem, 1794-1850, type KC]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KC-s.jpg)
16. December WM: None Sheetsize: 140 Design: W. Borowski Engraving: St. Łukaszewski Perforation: 12:12½
![[Boleslaw Bierut, type KD9]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KD9-s.jpg)
![[Boleslaw Bierut, type KD10]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KD10-s.jpg)
![[Boleslaw Bierut, type KD11]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KD11-s.jpg)
![[Boleslaw Bierut, type KD12]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KD12-s.jpg)
![[Boleslaw Bierut, type KD13]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KD13-s.jpg)
![[Boleslaw Bierut, type KD14]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KD14-s.jpg)
![[Boleslaw Bierut, type KD15]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KD15-s.jpg)
![[Boleslaw Bierut, type KD16]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KD16-s.jpg)
| No. | Type | D | Color | Description |
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| 659 | KD9 | 5Gr | dark violet | (109,398 mill) | 0.26 | - | 0.26 | - | USD |
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| 660 | KD10 | 10Gr | bluish green | (199,470 mill) | 0.26 | - | 0.26 | - | USD |
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| 661 | KD11 | 15Gr | green | (252,837 mill) | 0.26 | - | 0.26 | - | USD |
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| 662 | KD12 | 25Gr | reddish brown | (63,144 mill) | 0.26 | - | 0.26 | - | USD |
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| 663 | KD13 | 30Gr | red | (114,308 mill) | 0.26 | - | 0.26 | - | USD |
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| 664 | KD14 | 40Gr | orange | (19,3 mill) | 0.26 | - | 0.26 | - | USD |
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| 665 | KD15 | 45Gr | blue | (18,548 mill) | 1.05 | - | 0.26 | - | USD |
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| 666 | KD16 | 75Gr | brown | (20,442 mill) | 0.79 | - | 0.26 | - | USD |
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| 659‑666 | 3.40 | - | 2.08 | - | USD |
16. December WM: None Sheetsize: 100 Design: M. Bylina Perforation: 10¾-13
![[Rebuilding Warsaw, type KL]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KL-s.jpg)
8. January WM: None Sheetsize: 100 Design: W.Zakrzewski Engraving: M.R. Polak Perforation: 11¾:11½; 12½:12¾
![[Six Years Plan, type KM]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KM-s.jpg)
![[Six Years Plan, type KM1]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KM1-s.jpg)
![[Six Years Plan, type KM2]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KM2-s.jpg)
![[Six Years Plan, type KM3]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KM3-s.jpg)
2. March WM: None Sheetsize: 100 Design: B. Brandt Engraving: St. Łukaszewski Perforation: 12½:12¾
![[Women's League Congress, type KQ]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KQ-s.jpg)
24. March WM: None Sheetsize: 70 Design: B. Brandt Engraving: M.R. Polak, Cz. Słania Perforation: 12:12½
![[The 80th Anniversary of the Paris Commune, type KR]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KR-s.jpg)
1. April WM: None Sheetsize: 100 Design: St. Łukaszewski Perforation: 12½:12¾
![[International Day of the Child, 1 June 1951, type KU]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KU-s.jpg)
![[International Day of the Child, 1 June 1951, type KV]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KV-s.jpg)
20. April WM: None Sheetsize: 100 Design: P. Picasso Engraving: B. Brandt Perforation: 12¾:12½
![[Dove of Peace, Overprint, type KS]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KS-s.jpg)
25. April WM: None Sheetsize: 100 Design: St. Łukaszewski Perforation: 10¾-14
![[Labour Day, type KT]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KT-s.jpg)
9. May WM: None Sheetsize: 100 Design: B. Brandt Engraving: E. Konecki Perforation: 11½:11¾; 12¾:12½
![[Nowa Huta Steelworks, type KW]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KW-s.jpg)
![[Nowa Huta Steelworks, type KW1]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KW1-s.jpg)
![[Nowa Huta Steelworks, type KW2]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KW2-s.jpg)
![[Nowa Huta Steelworks, type KW3]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/KW3-s.jpg)
25. June WM: None Sheetsize: 100 Design: B. Brandt Engraving: E. Konecki Perforation: 12½:12¾
![[The First Congress for Polish Science in Warsaw, type LA]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/LA-s.jpg)
![[The First Congress for Polish Science in Warsaw, type LB]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/LB-s.jpg)
![[The First Congress for Polish Science in Warsaw, type LC]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/LC-s.jpg)
![[The First Congress for Polish Science in Warsaw, type LD]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/LD-s.jpg)
![[The First Congress for Polish Science in Warsaw, type LE]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/LE-s.jpg)
![[The First Congress for Polish Science in Warsaw, type LF]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/LF-s.jpg)
| No. | Type | D | Color | Description |
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| 682 | LA | 25Gr | red | Stanislaw Staszic (1755-1826) | (521000) | 4.19 | - | 3.14 | - | USD |
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| 683 | LB | 40Gr | blue | Maria Sklodowska-Curie (1867-1934) | (2,131 mill) | 0.52 | - | 0.26 | - | USD |
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| 684 | LC | 45Gr | violet | Zygmunt Wróblewski (1845-1888) and Karol Olszewski (1846-1915) | (2,03 mill) | 10.47 | - | 1.57 | - | USD |
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| 685 | LD | 60Gr | green | Marceli Nencki (1847-1901) | (2,131 mill) | 0.52 | - | 0.26 | - | USD |
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| 686 | LE | 1.15Zł | purple | Mikolaj Kopernik (1473-1543) | (2,131 mill) | 0.52 | - | 0.52 | - | USD |
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| 687 | LF | 1.20Zł | grey | (1,05 mill) | 1.57 | - | 0.26 | - | USD |
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| 682‑687 | 17.79 | - | 6.01 | - | USD |
