Dutch postage stamps

Five sheets of Dutch postage stamps in frame. 1) 1943, Michiel de Ruyter 7.5ct. Sheet with 50 stamps, mint; 2) 1943, Dag van de Postzegel, De postkoets. Three sheets of 2x 25 and 30 stamps, each in individual frame. Mint; 3) 1977, Amphilex 75ct. Sheet of 50 stamps, unused, affixed to corners; 4) Postcard Rotterdam - Parkkade with images of Dutch stamps and postmarks, in frame.

(total 6)