Semco window crank

A quick learner from Waukegan, il says:
Looking to replace this semco window latch. These windows are at least 30 years old. The window opens upright bottom to top.

Please advise. Thank you!
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Emily from SWISCO responded:

Hi there!

We'd be happy to help but we would need to see a photo of your operator with the window open so that the arms that operate the sash are fully visible. 

Thank you! 

A quick learner from Waukegan, il says:
Sorry for the delay, attached is the view you asked for. Please let me know your thoughts.
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Emily from SWISCO responded:

Thank you for the additional pictures! 

Start by taking a look at our 39-083 or 39-140. Carefully look over the dimensions for each of these items and compare them to your original assembly to see which one matches up for what you need. 

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