Casement window crank

A home owner from Silverthorne, Colorado 80498 says:
There are no markings on either the window or crank. I do not know the manufacturer. This part is roughly 40 years old.
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Lauren from SWISCO responded:

Hello, thank you for posting,

Your operator resembles the 39-385 and 39-386 Pella Egress operators. Please review the overall style and dimensions to confirm a good fit! Let us know what you think and if you have any additional questions.

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