Portzegel Nederland 1921-38, 1 gulden rood CreatorSchmidlin, Johan AdolfDate of creationmei 1921Collection150 years of designs for the Dutch Postal Services in pictures
Drukproef voor postzegels Nederland 1899 Koningin Wilhelmina, proeven voor de achtergrondarcering CreatorJoh. Enschedé en ZonenDate of creationmei 1921Collection150 years of designs for the Dutch Postal Services in pictures
Prinses Juliana in Giethoorn Date of creationmei 1921CollectionPicture postcards of the Dutch Royal Family
Brief van Jacobus van Looy aan August Allebé CreatorJacobus van LooyDate of creationmei 1921CollectionCorrespondence of the writer and painter Jacobus van Looy
Kleurproef, postzegels Nederland 1899 Koningin Wilhelmina, 4 cent groen CreatorJoh. Enschedé en ZonenDate of creationmei 1921Collection150 years of designs for the Dutch Postal Services in pictures
Kleurproef, postzegels Nederland 1899 Koningin Wilhelmina, 4 cent paars CreatorJoh. Enschedé en ZonenDate of creationmei 1921Collection150 years of designs for the Dutch Postal Services in pictures