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.
Folder - 50 years of large-vessel shipping on the Moselle
discover this beautifully illustrated folder, with images of the moselle river, complete with a sheet of 4 stamps franked with the first-day-of-issue postmark.