This shelf sign was manufactured by Signcor of Chicago, Illinois.  The case is made of heavy gauge brass with an acrylic plastic front pain.  The advertisement is printed on a thin plastic scroll that continuously revolves between two rollers.  Illumination is accomplished by a florescent light bulb.  This sign was purchased, in 2002, at an auction in Cicero, Indiana.

Dementions:
Hight...11 inches
Wedth...20 inches
Depth...4.25