I got a book through the post yesterday, with another fantastic literary stamp on it. This time it was honouring the 125th anniversary of Joachim Ringelnatz' birth, complete with the perfect poem for the occasion - "der Briefmark". Actually a loyal reader had pointed the poem out last time, but I hadn't seen the stamp itself - it's worth 85c, which is a bit of an unusual value. It features the poet's slightly silly silhouette, and you have to rotate either your head or your small parcel in order to read the text.
You can read the poem itself in German and English translation (by Ernest A. Seemann) here.