Phillip Carl Jablonski was a serial killer known as the “Deadly Urges Killer” who murdered at least 5 women. Jablonski died on California's death row December 27, 2019.

4" x 6" postcard from a pen pal in France.
On the back the sender has painted what looks like an upside cross in blood.
Hand signed on the back, Phillip Carl Jablonski San Quentin Death Row.   
 
Includes the original mailing envelope written by Jablonski's pen pal. The pen pals name and address appear on the back of the envelope.