Flute Stamps from Around the World This amazing collection of stamps from around the world has been genorously contributed by Prof. Jerzy Mrozik with the kind assistance of Piotr Kunysz. Polish flautist and pedagogue Prof. Jerzy Mrozik (born 1933) is currently rector of the Music Academy in Wroclaw. He is also president of the Polish Flute Association. One mainly associates his name with the National Polish Radio Symphony Orchestra (NPRSO) where he was solo flautist until 1996.