Two winners of the Köhler Prize away
At the end of 2017, two important philatelists of the 20th century passed away: Paolo Vollmeier (died November 30,2017) and Zbigniew Mikulski (died December 28,2017). Both were winners of the Köhler Prize (in 2002 and 2000) and were among the most important philatelists of the last decades. Numerous publications, extensive expertise and an international reputation have distinguished them both. We will honor their memory.