7 January 2009, Denmark
Bio Energy and Low Energy Building
Announcing COP-15, held in Copenhagen December 2009
design: Faber + Wildschiødtz
engrave: L. Sjööblom (9 DKK) & M. Mörck (5.5 DKK)
Beautiful graphic design made me bought them first, then I found what the stamps are about later. What a brilliant storategy to promote important event such as Convention on Climate Change.