5 the most expensive and rare postage stamps in the world

Swedish unique — $ 2.3 million

It is believed to be the only surviving misprint of the 1855 Three Skilling Banko stamp, which was supposed to be blue-green but turned out to be yellow. Because of this, one of the rarest postage stamps is called the «Yellow Treskilling». The last time the curiosity was shown to the public in 2010, at the London Stamp Festival. In the same year, she was sold at an auction in Switzerland. The buyers were a group of people who wished to remain anonymous… (read more)