I didn't know anything about Kaffee Worpswede when I found this, but quite a compelling looking place (with a fabulous logo.) I've since learned it was a significant one artistically and architecturally--built by sculptor Bernhard Hoetger, who came to Worpswede (a municipality in the district of Osterholz, in Lower Saxony, Germany) through his acquaintance with Paula Modersohn-Becker.
The Kaffee was completed 1925-1927 as part of a three building compound, transforming the sculptor's architectural ideas into reality. Combining modernist, folk and mythical sorts of inspiration, it served as a functional cafe and as an exhibition space for area artists, including a first generation including Heinrich Vogeler, Otto Modersohn, Paula Modersohn-Becker, Hans am Ende, Fritz Overbeck, Fritz Mackensen, Carl Vinnen. Today it stands, restored, as a museum and one of the few surviving examples of "North German Impressionism."
3 1/2 x 5 3/8 and in very good, clean condition, with just a bit of curling. I believe late 1920s.