Here's a later model, probably 1950s, made by GEC. Unlike the first switch where the cover is secured by two screws top and bottom, this one just unscrews from the threaded center hole:
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In this one the switch contacts are fully enclosed. The rating is 250V 5A again, but the swtich is a quiet-action type without the spring-biasing, and is thus stamped "AC only." This is the 2-way (=U.S. 3-way) version:
[Linked Image]

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By the way, to give an idea of scale, both of these switches are about 2" diameter.



[This message has been edited by pauluk (edited 05-31-2004).]