Old crank no name or markings

A quick learner from Missouri says:
My crank windows are on the porch of a 1960's modern ranch home.1
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Emily from SWISCO responded:

Hi there!

I'm afraid we don't sell an exact match for this. Take a look at the operators we've related for you on this page. I can't promise they will work for you but look over the specifications and see what you think. 

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