1961 Amsterdam, the Netherlands 4 3/8 × 5 3/4 inches
Special cards made for businesses, schools, and volunteers who contributed to the children's postage stamp project. This one was for schools, No. 02287/7,500.
Text: Your donation to the kinderpostzegelactie 1961 opens new possibilities for poor Netherlands children. We thank you for your help and count on your cooperation in the future.
Text:
Your donation to the kinderpostzegelactie 1961 opens new possibilities for poor Netherlands children. We thank you for your help and count on your cooperation in the future.