Listed is one, genuine LUCAS PRS 3 combined light and ignition switch, complete with fixing clip and key.
4 screw terminals, tested and working. Original part, as fitted to many 50's 60's vehicles. Austin Healey Sprite, Morgan, Land Rover etc.
Not perfect, but serviceable.
Barrel 41mm. dia. x Assy. 86mm. long.
Part Nos. on Barrell. 31270F 10 62
Good Luck, Thank you.