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Keywords from Image Description:
Postzegel zomer. Zomerzegels met Kamerlingh Onnes Talma Schaepman en Erasmus NVPH nr Ontwerp door Seegers Ontwerp en gravure door Hartz en ct en ReitsmaValena ct scanned from own collection Wouter Hagens PDold Stamps of the Netherlands Desiderius Erasmus in art Heike Kamerlingh Onnes Herman Schaepman Syb Talma Sem Hartz