DNK's stamp catalogue is a reference work for all German stamps, including old Germany, Danzig, Memel, Saar, the colonies and the occupied territories during the two world wars, as well as local publications. In addition to registration and valuation of the main stamp issues, the book also contains the most important colour, watermark and perforation variants. The illustrations of all stamps from Berlin, the GDR and the Federal Republic with different images makes it possible to quickly find and assign the numbers. The catalogue offers the advanced collector a wealth of information in numerous appendices, which include among other things se-tenant and stamp booklets (Bavaria, German Empire, Danzig, Saarland, ...) as well as joint publications of the Federal Republic and Berlin.