Here is another nice cover from South Korea, with 3 stamps from different sets dedicated to fauna. First one is from set Chinese New Year 2014 - Year of the Horse, issued on 2.12.2013. Second one is from set Endangered Species : Korean Mountain Goat, issued on 20.2.2017. And third stamp in pair is Tawny Owl (Strix aluco), issued on 1.9.2005. This special postmark is dedicated to the 70th Anniversary of the South Korean Air Force.