Which window operator do I have?

A handy person from Berkeley, CA says:
Hi there. I am trying to find the right replacement for my window operator.
A picture is attached. The arm has "Getty" stamped into it, and the screw hole measurements are indeed 4-3/4" and 3-7/8", but the body is curved in a slightly different way. And on my old part, the helical teeth are very visible.

Is the 39-044 the one I want?
I suppose an operator with a differently shaped body would be fine, and I'll just need to do a little paint work.
User submitted photo of window crank.
Profile picture of Mike
Mike from SWISCO responded:
This was a first for me. After discussing the situation with our window operator expert, he believes that the 39-044 is the replacement for your operator. He said that the 39-044 is the correct hand for your window but that the crank handle is on the opposite side (which will not cause a problem for you). The 39-044 will be the closest operator you will find to your original operator. Let me know if you have any questions or need more information about the 39-044 to help you make your final decision.
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