windown spring replacements needed

A quick learner from massachusetts says:
need to identify replacement springs for my windows ( 27 inches). windows are 20 years old.
User submitted image of their window hardware.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting. There should be a shoe at the end of this balance's cord. If possible, I would like to see a picture of it before I make a recommendation. Thanks!
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