Operator with two split arms?

A quick learner from Montauk, NY says:
Hi - I need to replace the operator on my bathroom window. Looking at your comprehensive site and threads, it looks like I have a blend of 39-146 and 147 combining two split arms and two cranks in the same operator?
Apologies in advance, I'm sure this might have been covered in some thread but after searching for a bit thought it be easier to send you some photos. I hope that's ok and do appreciate the advice and guidance.
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Emily from SWISCO responded:

Hey there!

Thank you for your patience during our busy season. I am afraid we've never been able to find an exact replacement for this Andersen operator; I am not sure if it's made any longer. Our closest match would be the 39-206 Andersen Operator. Take a look at the dimensions, and see if you think this could work as a replacement. 

Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
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Anatomy of a casement window
Anatomy of a casement window
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