Heinz-Shultz Lastenboy by Heinz-Schutz

According to the great literature sent by Sebastian Manitz, this trailer is the Lastenboy Model made by Heinz-Schutz.  If you have any info on this trailer assembly, feel free to drop me a line and tell more.
Vintage literature
Hello, I'm from Germany and have found your great site. Since June I own a single wheel trailer. It's a "lastenboy" from Heinz Schutz. I send you copies from the original documents and some pictures. best wishes from Germany. Owned by Sebastian Manitz
An Internet friend, Atti B sent these to me from his travels. Don't know much about these trailers as this is the first I have seen. Thanks for the Pics.
Click Images to enlarge!!!!