@Coolerman pointed out that this is labeled somewhat like a hazard or turn switch. Also it has only 3 positions on the switch vs the 4 on the normal 5 terminal switch. Made me scratch my head then I thought hey maybe it’s that dash mounted turn switch like
@Indygbd has for his 58 - checked
his thread (which has great photos, thanks Gabe!) and the back matches. So it looks like this is actually the dash turn switch with a headlight knob attached to it! Talk about dumb luck. Makes me wonder did a 6 terminal headlight switch ever exist or has this always been what the 6 terminal switch was? The terminal pattern matches the two other photos of the 6-terminal that I'd ever seen, so I suspect there never has been an early light switch with anything but 5 terminals.
now I just have to see if I can find or reproduce the knob. And give up on finding a 6 terminal headlight switch that likely never existed.