Cord Broken on Balances

A contractor from Binghamton says:
I need 4 of these balances.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
This looks like it could be our Series 770 but it's hard to be sure. Can you confirm? As for the shoe, check out our 15-173 for a possible match.
How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
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