[GreenKeys] What's it for?

[John, W9DDD]

Hello all,

I'm wondering if any of these parts look familiar?  Are they Teletype, 
Kleinschmidt or non-teleprinter?

#3 I think is a function lever from a 15, but coded for what? I suspect 
blank, but I need confirmation.

-- 
John, W9DDD
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