Awning roto operators

A distributor from Gibsonia, PA says:
Look to be circa 1980 or so... left hand rotos. Original window manufacturer unknown.
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Bob from SWISCO responded:

I am pretty confident we can help, but I need more information to possibly narrow this down. Can you remove the operator from the window and show me a clear view of it from behind? I need to discern the hole pattern on the top and bottom tabs. Can you also fully remove that link arm and give me a side profile view of it so I can see its shape and the hole at its end? From there I'll do my best to find what you need. 

A distributor from Gibsonia, PA says:
Thanks Bob. See attached... I'm not on-site, but the guy who is on site sent me this sketch, which should answer your questions.
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Bob from SWISCO responded:

Possibilities include our 39-025, 39-061, or 39-194. Without knowing the shape and size of the hole at the end of the link arm, I cannot narrow it down any further. Compare these to the awning operator to see if any match up. 

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