1928 Huygens postal stationery card publicity poster, 29x22.5cm, folded, very rare (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie A. 1-1000) cancelled by Groningen 16.XII 1926 cds, very fine, plus three postcards with Olympic slogan cancels and an unused Weenenk & Snel official pc (minor soiling) depicting 200m female swimmer (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie B. 1-1000), cancelled by Olympic pentagonal "N2" ds, very fine and scarce with Olympic cancel (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie A. 1001-2000), unused, fine (Image)

1928 Amsterdam 5c official postal stationery card by Huygens (Serie B. 1-1000), cancelled by Groningen 4.3.27 cds, very fine (Image)

Huygens stationery Cycloon-Ramp Series C. 1-1000 cancelled by Olympic 14.V1.1928 pentagonal "N1" ds, very fine and uniquewith Olympic cancel , sent on the day of the football match between Netherlands and Egypt in Rotterdam (Image)

Huygens stationery Jubileum H.K.H. Juliana Series A. 2201-2300 cancelled with Olympic 14.V1.1928 pentagonal "N1" ds, very fine and unique with Olympic cancel (Image)

1928 Amsterdam 3c official postal stationery card by Huygens (Serie F.1) depicting FOOTBALL sent registered to Italy uprated with Olympics 7 1/2c vert. pair tied by the special pentagonal Games cancel with "AMSTERDAM / STADION" stadium registration label adjacent, Milan arrival bs, fine and rare usage of this card especially registered, ex Parigi (Image)

1928 Amsterdam 3c official postal stationery by Huygens (Serie F.1.) depicting football, cancelled Olympic slogan machine cancel, a very scarce usage of this card (Image)

1928 Amsterdam 5c official postal stationery card by Huygens depicting Swimming (Serie F.4) with "DE REGENTES" advert below, cancelled by Groningen 10.9.28 cds, minor foxing, fine (Image)

1928 Amsterdam 5c official postal stationery card by Huygens depicting Swimming (Serie F.4) with "DE REGENTES" advert below, uprated with 2c and cancelled by Groningen 10.7.28 cds, with text on reverse mentioning these Olympic cards, minor foxing, fine (Image)

1928 Amsterdam 5c official postal stationery card by Huygens depicting Swimming (Serie F.4) with "DE REGENTES" advert below, unused, very fine (Image)

1928 Amsterdam 3c official postal stationery card by Huygens depicting Swimming (Serie F.4) with "DE REGENTES" advert below, unused, very fine (Image)