MARX DETECTIVE
Here is the right side and it doesn't have any identification on it, but we know it's a Marx. As you can plainly see, then is blue/black paint underneath the receiver area, but I don't know the original paint job. This Cap Gun belonged to Wendy's father, but I doubt if he went to so much trouble as to fully remove all of the paint and then leave this little bit.

Photo thanks to Wendy Glover





Click On Photo For Cap Gun's Parent Page