This is a stamp size booklet with 30 Gömböc stamps. Our booklet is special because you can see Gömböc in movement if you leaf through our booklet. Gömböc was in focus in the Hungarian pavilion at the Expo in Shanghai, in 2010. Because of the importance of this event, the Hungarian Post Office has issued a block of stamps and a booklets in memory of this special occasion. Each unique stamp (with a face value of HUF 100) shows a different characteristic position during the movement of Gömböc.