| Added by |
 Maciej Pasztor
|
| General Description : | Julian Marchlewski was born in Włocławek into a Polish family. In 1889 he co-founded the Polish Workers' Union. In 1893 he co-founded the Social Democratic Party of the Kingdom of Poland and Lithuania with Rosa Luxembourg. |
| Face value | 15 złotych |
| Catalog code (Michel) | PL 546 |
| Catalog code (Scott) | PL 470 |
| Catalog code | Yvert et Tellier PL 567 Stanley Gibbons PL 666 AFA number PL 543 Polish Stamps Catalog (Fischer) PL 512 |
| Stamp colour | blue black |
| Stamp use | Commemorative stamp |
| Print run | 4,296,400 |
| Issue date | 23/03/1950 |
| Designer | K.Kwinta |
| Paper type | White; Middel |
| Print technique | Photogravure |
| Printed by | Drukarnia Narodowa w Krakowie |
| Perforation | 10¾ or 11¼ (line) |
| Height | 30.00 mm |
| Width | 20.50 mm |
| Catalog prices | No catalog prices set yet |
