Postzegel Nederland 1970, Gelegenheidspostzegel IPU CreatorBos, BenDate of creation23 juni 1970Collection150 years of designs for the Dutch Postal Services in pictures
Postzegel Nederland 1970, Gelegenheidspostzegel UNO CreatorBos, BenDate of creation23 juni 1970Collection150 years of designs for the Dutch Postal Services in pictures