Replacement for 28" spring

A home owner from Fresno, CA says:
I am looking for the replacement for

28" 27 3 TN CALDWELL

Please advise the option to select. Thank you.
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Mike from SWISCO responded:

I can't get a good look at your balance top attachment to see if it has plastic wings like the bottom one. Check out S385-28 and S350-28. Choose the one whose top attachment matches yours. You'd choose a 2730 stamp option.

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