If its not a Cord or a Graham Ill take a stab at Hupmobile because they took over Cord and tried to continue the line the only reason I know that about Hup is I worked at "Antique Motor Car" in the 70s and an old guy that worked for hup used to tell the old story's every day at lunch how Hup built a better Cord then Cord LOL
I wont guess any more Im really stumped and I dont want to do a search for it !! Thats not fun
!!!
Chris