Lawrence Bittaker serial killer dubbed the "Toolbox Killer.” Bittaker was sentenced to death in March 1981 while his accomplice Roy Norris received 45 years to life. 

Authentic pop up Be My Valentine card handmade by Bittaker on death row.  Bittaker's pop up cards are perhaps the most genius items we've seen made in prison let alone on death row.
The card opens up and and a pink heart pops up on which Bittaker has written, "Be my VALENTINE!" and drawn four double hearts.
 
Hand signed and dated on the back, (c) 2009 LS Bittaker.