One vintage chicken head knob. I am not a guitar expert. There is another listing with this exact type of chicken head knob listed as for a lap steel guitar Supra airline Kay National part. Please check the photos carefully. Note that the edge recesses end above the set screw on the back of the knob and the set screw is larger than ones where the recess goes all the way down the back edge. My dad saved these decades ago. Please send any questions if you need more info. I only have two of these.