SWISCO - The Replacement Hardware Authority

Need to find this part for an old window.

A home owner from USA says:
I need to locate this piece for a window balance. Thank you.
User submitted photos of a top sash guide.
Profile picture of Tom
Tom from SWISCO responded:
I'm not familiar with this part. What is its function? Can we see an undamaged version? Could we also see what it looks like installed? Finally, please provide its measurements.
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