A peepbox that opens and shows a "Pantoffel-Courier" (literally a messenger in slippers) holding a sealed letter in his hand. This playful printed artefact is from late eighteenth-century Germany, and an example of the #earlymodern popurality of peepboxes - and letters - across Europe.
For friends of #bookhistory: this peepbox consists of two prints, a woodcut and an etching.