The gömböc is the thematic focus of the Hungarian pavilion at the Expo in Shanghai (1 May to 31 October 2010). To mark that occasion the Hungarian Post Office has issued a block of stamps and a book of stamps. Each individual stamp (with a face value of HUF 100) shows a different characteristic position during the movement of a gömböc.

The first day cover is franked with one of the gömböc stamps and has a first day of issue postmark (with date and gömböc logo) and an extra first day of issue postmark. The gömböc and some formulae from the gömböc proof are depicted on the first day cover.

Date of issue:	30 April 2010
Size of the envelope:	220 x 110mm

ready for shipment within 14 days

€ 10
incl. VAT, plus shipping cost