Dave:
That looks like the upper part of a GE Americana 30" double-oven range, like GE used those components to create a semi-built-in model that gave consumers the functionality of an eye-level wall oven without as much building-in expense. Strange unit.
On the double-oven Americana (at least the one I had in a house I lived in years ago; can't speak for every Americana model of every year), the lower oven was P*7 self-cleaning, and the upper oven had removable wall panels that went in the lower oven during a cleaning cycle. Great use of space - two big ovens and four burners in only thirty inches of width. There was also an optional vent hood that stacked on top of the range, with a front panel that tilted outward. When you needed venting, you pulled that panel outward and up, and the hood began exhausting. I loved everything about that range except its Harvest Gold colour.