The radio is marked C-D2AA-18806 etched into the metal.
It also has an ink stamp AB-260-207.
I was told it is a Factory Original that has never been installed but its meant for a 67' Shelby.
The neighbor I got it from worked at the Philco-Ford factory as some kind of engineer in the mid 60's, I also got some cool 1972 Ford Meteor Original Schematics straight from the factory.
See Attached Pictures for the details.