I need the left side crank mechanism I think. I could find no name of window

A home owner from Alexander ny says:
I am an 82 yr old lady who has tried to send what I thought were important pictures of the left side of the bay window. When I turn the handle the crank seems stripped and does not open or close unless I push it
Thumbnail of the uploaded file named operator base
Thumbnail of the uploaded file named link arm
Thumbnail of the uploaded file named link arm
Thumbnail of the uploaded file named truth 21550 link arm
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Emily from SWISCO responded:

Hi there!

Thank you for contacting us. Our 39-318 operator comes to mind. I recommend you review our specifications to confirm they align with yours. 

Let us know if you have any questions! 

Alternate image for 39-318
Alternate image for 39-318

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