From around 1855 – 1860 stamp sheets were perforated with small holes, so that the single stamps could be separated more easily. The perforation was measured according to the number of holes pr. 2 cm. Todays stamp is showing the National Museum in Reykjavik and was issued in 1925. The perforation is 14 x 14½ which means, that there are 14 holes pr. 2 cm horizontally and 14½ vertically. CV is 100 € for a mint copy.