Can I replace Left/Right and Center Cranks?

A quick learner says:

My dad says they could be original 1927 hardware. Windows are 3 panels, horizontal, aluminum frame there are some markings on outer pieces indicating left or right with some numbers. I am not there at the moment to see them

Please help, thank you.


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Dave Sr. from SWISCO responded:

Thanks for posting, Douglas. The window your dad has is a very old Stanley awning window. Most parts are no longer available, to say the least. We do still carry the 39-076 center gear operator but not the other part you show in your photos. That was called the "jack." I'm not sure if any company would still have this. I'm sorry we don't have anything closer!

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