Wright casement window help

A home owner from New Mexico says:
We have a Wright casement window that also has 07900 stamped on the top arm, which fastens to an arm below it, stamped R 07867. Bottom arm is stamped 6789B. Though some of the numbers are not clear in the photo, all are easily read on the mechanism. Do you have anything that will work for this? Gears are partially stripped. Thanks in advance.
User submitted a photo of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Good morning. I believe we do have something that can work for this, as a matter of fact. Start by looking at our Wright 39-387 and 39-388. I think you'll find these match well, but I recommend looking over our dimensions just to confirm.
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