This is a late 1920's - 30's Magic Chef American Stove Co. Burner Control Knob.
This knob is in very good solid condition, there are no chips or cracks. This is a very nice solid original knob. Please note Magic Chef did not use a standard 'D', they used a square on the undersides of their knob dials. Please view all photos. This knob uses a set screw to hold it to the valve stem. Set screws are not included.

MEASUREMENT:  top length 2-1/4"  /  top width 1/2"  /  stem 1.0"