I found your blog via a google search about Reinhold Marxhausen's Stardust sculpture/stone.
The short story is that I possess one. I carry it with me everywhere I go, as it is a reminder of my grandmother. She obtained this art many years ago in exchange for a VHS tape she was selling and it was given to her by a small child who seemed to have shown up alone and spoke no words to my grandmother.
Anyway, I am curious about this piece. Any info you may be able to give me would be wonderful. I am uncertain as to how many were made, how it made its way to a flea market in NJ, and if it holds sentimental or monetary value to someone.
Here are two photographs of the so-called "stardust sculpture stone":
The stone was signed by Marxhausen:
If anybody can provide any information, I will forward it to Ms. Weisse.