There is a sensor in the left front unit. So, it could be a single oven model (Stratoliner?) with the dial for the automatic unit and the light switch where the companion oven controls would be on the Liberator. I have two Liberators in white that are partially restored. I no longer need them for baking so I am waiting for mental energy to decide what to do with them. After I started work on them, we found a MINT GE TOL double wall oven in Woodtone Brown. Each oven is as big as the main oven in the Liberators and holds two Bundt pans on one rack, so I could bake 4 cakes in less than 30 inches of space if I needed to do so. After that we found my Amana ME range which is now in my kitchen. With the micro-thermal oven, a pound cake that takes 70-80 minutes in a regular oven is done in half that time so it's almost faster to make one at a time in it rather than mix them two at a time and run them downstairs to the waiting ovens unless I am baking more than two.