Willow Run Gate Guardian - "Old 139"

Here's a question for Steven Puhl.  :-)
 
A while back I was  reading a 1956 book "The Story of Willow Run"  (By Marion F. Wilson, Published by the University of Michigan Press in Ann Arbor, MI). This book mentioned and showed a few pictures of a B-24 simply named "Old 139" being manoeuvered into position somewhere outside the FO WR plant immediately post-war.  I think the book said the plane was obtained by the Edsel Ford post of the American Legion in 1946.  Sadly time and neglect did for the bird, like so many others.
 
My question.  All the photos published in the book are nose-on so it's impossible to ascertain what (if any) marking were being carried.  What machine was it?
 
Memorial B-24s are my 'thing' (to coin a phrase) and I'm having one of those "inquiring minds" moments.
 
Any further information, Steven?
 
Robert Smith
42-50535 "Joplin Jalopy" Blogger