Subject of the commemorative coin:
 50th anniversary of the launch of ESRO 2B (Iris 2)

 Description of the design:
 The design shows the ESRO-2B satellite, the first successful satellite of the European Space Research Organisation, which was launched into orbit in May 1968. ESRO-2B, also called “IRIS” (International Radiation Investigation Satellite), mainly studied X-rays from the sun, cosmic rays and radiation belts. The mint mark of Utrecht (the Mercury staff) is at the bottom, together with the Belgian mint master mark, the coat of arms of the municipality of Herzele, the country code BE and the initials LL, which refer to the designer of the coin, Mr Luc Luycx. The twelve stars of the European flag are depicted along the outer ring of the coin.