What is this switch?

This is what the back side should look like.
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If there is something to solder wires to and the contacts work it might be worth 1/4 to 1/2 to some one.

If you move the post over you should be able to see the contacts.

In one particular position the contacts on the back should be shorted together.
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What I found on my original was the little springs that push down on a bar inside the switch were rusted away so the bar could not make contact.

reverse light switch