Doesn't Seem to Need Much....
If you're into rarity, this is a nice range.
It appears to be 1955-58, somewhere in there, from the styling, and it looks as if it could be GE-based. The oven temp knob appears to be a replacement, and there is something missing from the control panel; you can see an oddly-shaped hole where something is supposed to snap or twist into place.
Aside from those things, she's a remarkable old girl. I never saw an oven temp knob sprouting from the middle of a clock/timer unit before. That must have been fun to fix when it went wonky.