New, old stock Lucas Ignition Switch model S55, part no. 31216B.

As per usual practice sold without ignition barrel / key that can be transferred from the switch being replaced.

This switch is similar to the more widely used 31187 which has terminals pointing to the rear.

Applications for this 31216 switch are:  Jaguar 2&1/2 and 3&1/2 Litre 1949-51; Singer SM1500 1949-54 and Hunter 1955, Hunter 'S' model 1956 (but not Hunter 1956)

It lost its original Lucas box years ago so some slight tarnishing of the brass terminals has occurred.