Daniel Siebert was an American serial killer who passed away of pancreatic cancer on April 22, 2008 while awaiting execution. 
Siebert is known to have victims in California, Nevada and Alabama.

8 1/2" x 12" unsigned explicit artwork which was among Siebert's property when he died.
This has to be some of the last stuff created by Siebert.
 
Scene with a solid black border done by Siebert. The actual item is not censored or obscured.