Lucas off-on switch, part number SPB104 / 31434 / 2H4841.
Supplied with a plain black knob. which is held in place by a sprung pin. Knurled chrome bezel to retain the switch securely in the panel. Rated at 10 amps on 12 volt systems.
As fitted to Austin Healy Sprite Mk1 for the wiper switch and a large number of classic cars like; MG, Morris, Mini, Austin, Jaguar, Hillman, Triumph, Allard, Armstrong, Bristol, Daimler, Jensen, MGA, Morris, Cowley, Rover, Singer, Triumph, Standard, Vauxhall, Wolseley.