Hey Guest!
SP53. My first car was a Morris Minor which used basically the same switch. I recall taking my younger sister for a drive one night and joking with her how the headlights could be on high beam or low beam...high beam, low beam... high beam, low beam. Suddenly the whole thing went sproing past our respective ears, ending up in the back seat somewhere. Gave me some pleasure to find the same switch in my TR when I got it.