Is this a Postage Stamp?


Why?:  This site, though primarily featuring postage stamps, will also include other kinds of stamps, like the poster stamp* above. Poster stamp graphics are often hard for me to resist, and this one seems to illustrate well the labor (of love?) involved in developing this website.
The stamp (German, early 20th century) presents an odd image (or perhaps not), for the Arbeitsgemeinschaft Deutscher Junglehrer (ADJ), the German young teachers group associated with the Verband Bildung und Erziehung (VBE – Association for Education). Naked young men are pictured trying to move an enormous boulder. Perhaps the message speaks to the difficulty young teachers have as they begin their profession. (I was once a challenged young teacher.) And is that a tree of golden apples? Well, teachers and apples go together.
If I learn more about the circumstances surrounding this stamp, I’ll pass that information along. Note the insignia in the bottom left corner of the illustration. I assume that’s the mark of the artist. Can you add more information about this stamp?

Your comments are encouraged.

* Poster stamps were quite popular (and collectable) in the early 20th century. They were used to promote products, events and causes. Often they were miniature reproductions of actual posters. For more info check out the Poster Stamp Collectors Club.