Ace Double: Mister Justice by Doris Piserchia & Hierarchies by John T Phillifent

ACE DOUBLE 53415
HIERARCHIES
by
JOHN T PHILLIFENT
(COVER BY KELLY FREAS)
and
MISTER JUSTICE
by
DORIS PISERCHIA

PUBLISHED
by
ACE BOOKS
1973

Part of the long-running "Ace Double" series of science fiction paperbacks, this volume consists of the two short novels named above, printed back to back and upside down in relation to each other, with two front covers.  So you finish one story and flip the book over to read the other one - what's known as tete-beche format.  Like a lot of SF fans, I collect these, but I happened to have an extra copy of this one.  

The book is in good vintage condition, with just some very mild signs of wear and creasing.  The pages are all firmly attached, with no dog-earring or writing.  Please judge the condition from the pictures.