1958:
Stone-Chance Ltd
Stone-Chance Austinlite Cyclic Switches
Rec. Num. 1 of 2
Source: Aeroplane December 19th 1958
1959:
Stone-Chance Ltd
Stone-Chance Electrical Components Austinlire Cyclic Switches
Rec. Num. 2 of 2
Source: Flight January 9th 1959