Take a look at the SEPAC (Small European Postal Administration Cooperation) 2013 folder, SPEAC is an association of small European country postal authorities
For the 2013 joint stamp issue, the 12 SEPAC member states each selected an animal living in their country. All these stamps are presented together in a special folder. The Luxembourg stamp features a wildcat.
Grand Duchy of Luxembourg - A Philatelic Journey
this book is a must-have for fans of philately, and also for tourists and fans of luxembourg.