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Series: 20th Death Anniv of Korczak
Poland, 1962, 90 gr. 12 (1/2) х 12. multicoloured
Catalogues: Michel: 1359Scott: 1100Stanley Gibbons: 1346Yvert et Tellier: 1217
Plots: Korczak Janusz. «King Matthew the First»
Poland, 1962.11.12, Warsaw. Year of Korczak