To commemorate the 100^th anniversary of the Olympic Games that have been held since 1896, the International Olympic Committee authorized Taiwan government to make and issue commemorative stamps. It was issued by Taibei Post office with the first day cover and printed postmark which is out of print now.( Taipei Post Office is now known as Taiwan Post Office).There are two 23K gold stamps inside and one Olympic Games centennial historical retrospective card in Chinese and English version. Each stamp bears a serial number and warranty. There are 100000 sets of world's limited edition.