Kleurschema voor postzegels Nederland 1991 Februaristaking CreatorToorn, Jan Willem vanDate of creation12 juni 1990Collection150 years of designs for the Dutch Postal Services in pictures
Postzegel Nederland 1990, Europapostzegel, Postkantoor Veere CreatorUnger, GerardDate of creation12 juni 1990Collection150 years of designs for the Dutch Postal Services in pictures
Postzegel Nederland 1990, Europapostzegel, Hoofdkantoor Koninlijke PTT Nederland N.V. te Groningen CreatorUnger, GerardDate of creation12 juni 1990Collection150 years of designs for the Dutch Postal Services in pictures