I have one of these but the logo is missing, probably went on a chain around someones neck back in the 80's.
Guess I'll have to swipe one off a Mercedes to replace it.
I seriously doubt GE would have deliberately used a logo associated with a German car so soon after WWII however...
A Google search seem to indicate this is a model 835, not an 814.
This Brochure from TVhistory seems to verify that though the set on the Brochure does not have the logo.
Perhaps it was some sort of Promotional item though it seems odd, however the emblem seem to be exactly the same as a Mercedes emblem.
http://www.tvhistory.tv/1947-49-GE-Photos-Pg1.jpg
Sony supposedly made a version of their 5" set for Mercedes dealers back in the 60's and of course Philco made a set to go with the Ford Mustang though it doesn't have any Ford logos on it.