I need a replacement for Semco Window part - TRUTH

A home owner from Elmhurst, IL says:
The only number on the piece that I can find is 31538. Does this help.
Please let me know if you have a replacement for this crank mechanism.

User submitted photos of a window operator.
Profile picture of Paul
Paul from SWISCO responded:
It's hard to tell what you have based on these images. Check out our 39-031 and 39-032, or perhaps our 39-155 and 39-156. Let me know which is closer.
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