Anderson part no.???

A home owner from CT says:
We have Anderson casement with left arm closer and mechanism, 10" arm which doesn't look like the 9-3/8" you display. Can you identify? Was buried in window trim-not surface mounted. Thanks.
User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Good afternoon, and thanks for posting! Actually, I don't think this is Andersen hardware. This operator looks more like something Pella made. Please see our 39-385 Pella Egress Roto Operator and compare it to your own hardware. Let me know what you think!
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