The "sign thingy"is FRIGIDAIRE's "Sheer look" the right angled design that was introduced back in 1957.It set the pace for all appliance manufacturers to follow for decades introducing pastel colors in the 50's and 60's along with bolder more earthtone colors in the 70's.
Compwhiz128--- You can see the original model for the 'sheer look' arm pose if you go to the SUPER forum and scroll down to the thread called "1958 Frigidaire Appliances Brochure".