Huygens Postal Stationery Cards (ordered by Series number). 1928 Amsterdam 7 1/2c official postal stationery card by Huygens, design all in brown, very fine and very rare with no more than 10 existing at most (Jonker type A.2). (Image)

1928 Amsterdam 7 1/2c official postal stationery card by Huygens, design all in brown and black, very fine and very rare with no more than 10 existing at most (Jonker type A.3). (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie A. 3001-4000), unused, vertical crease otherwise fine. (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie A. 4001-5000), cancelled by the Olympic pentagonal ds, very fine and scarce as such. (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie A. 5001-6000), unused, very fine. (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie A. 6001-7000), used with Overveen 11.VII.27 cancel, very fine. (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie A. 1-1000), unused, some minor tone spots, very fine. (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie A. 3001-4000) cancelled by Overveen cds, small corner crease, very fine (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie A. 6001-7000), cancelled by Amsterdam Central Station 8.1.1927 machine cancel, very fine (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie B. 1-1000), unused, some minor tone spots, very fine. (Image)

1928 Amsterdam Huygens 3c official postal stationery card depicting Swimming, with "De Regentes" advert below, unused, very fine. (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie F. 1) depicting football, unused, two vertical creases, still a scarce and popular card. (Image)