Postzegel Nederland 1929, Kinderpostzegel, 1 ½ cent grijs CreatorKamerlingh Onnes, Harm H.Date of creation10 december 1929Collection150 years of designs for the Dutch Postal Services in pictures
Postzegel Nederland 1929, Kinderpostzegel, 5 cent groen CreatorKamerlingh Onnes, Harm H.Date of creation10 december 1929Collection150 years of designs for the Dutch Postal Services in pictures
Postzegel Nederland 1929, Kinderpostzegel, 6 cent rood CreatorKamerlingh Onnes, Harm H.Date of creation10 december 1929Collection150 years of designs for the Dutch Postal Services in pictures
Postzegel Nederland 1929, Kinderpostzegel, 12 ½ cent blauw CreatorKamerlingh Onnes, Harm H.Date of creation10 december 1929Collection150 years of designs for the Dutch Postal Services in pictures