Coil Balance System Unknown

A home owner from long island - New York says:
July 1, 2020
Will it be possible to figure out what type of model are these window's balance are.
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Bob from SWISCO responded:
July 6, 2020

I believe you have an older version of the 15-180 Pivot Shoe. This uses Series 190 Coil Balances. 
Coil Balance Shoe
Coil Balance Shoe
15-180
$3.97
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