Coil balance for Simonton Double hung window

A quick learner from Cincinnati, Ohio says:
These windows are approximately 15 years old. The coil balance broke, so we need to replace a total of 2 balances. The only marking is a number 4. The shoe measurements are 1-1/4" x 1". The width of the coil is 1/2".
What part number will work?
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Tom from SWISCO responded:
Hey, Richard. There are a lot of possibilities. Could you show us a picture of the pivot shoe in question? That will help us determine what you need. Thanks!
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