NM850
True Classic
Found this on the floor followed by a flopping “dome” light switch. Luckily I had spares. Then why was only the left light working? Bulb was good but there was not contact between the wire and the bulb post. 55 years of corrosion. I tried to clean including using a dropper of muriatic acid, to no avail. I wanted to be sure not to damage the plastic so I decided to add a small drop of solder and all is well.