| Observations | Jan Amos Komensky (Comenius) (1592-1670), Czech philosopher theologian and educator (teaching was the impetus) Text auf der Briefmarke: JA Komensky (Comenius) 1592-1670, Deutsche Demokratische Republik Text on the seal: JA Komensky (Comenius) from 1592 to 1670, the Republic |
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