Relacement window operator

A quick learner from NH says:
I have an Anderson casement window, around 1974 and the operator no longer works. Do you have a replacement operator?
Thumbnail of the uploaded file named anderson window crank.jpg
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Emily from SWISCO responded:

Thanks for reaching out to us. I'm afraid we won't have an exact match for this old operator. To help with our search, can you show us an unobscured view of the ends of the operator's arms? I can't make any promises but we can try our best. 

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