I guess I'd be tempted to say that this particular Phaeton's
coachbuilder would be Auburn-Cord-Duesenberg since they took the rear half of the LeBaron Duesenberg prototype and the front half of a 1936/37 Cord re-skinned by Tremulis, and combined the two.
The
actual LeBaron Duesenberg prototype looked significantly different, like this:
![](http://i652.photobucket.com/albums/uu248/gyronaut/LeBaronDuesenbergPrototype.jpg)