Here is the best picture I could find of a 3 device panel.
The ignition, unknown, lighter.
Two updates: I got a little suspicious of the 360HP valve cover decal when I found the car had a Mercomatic rather than Multi-Drive Mercomatic and, sure enough, the VIN confirms that the engine is a 383ci, not the 430ci. Also found another 58 Monclair convertible in Jim Rogers (Las Vegas) collection. That makes 4 known survivors unless someone else comes up with more.
I looked up the member cars listed. That is where I got the Malburgers. I saw the Parklanes and the Montereys and I know of a Parklane for sale in Europe (wants $65,000 for a car that will need a complete restoration). I’m specfically interested in knowing of any more Montclair convertibles.