Coil balance spring replacement

A quick learner from Michigan says:
September 30, 2023
The spring broke, but I don't see any identifying markings on it. It is 1/2" wide and only coils about two and a half times around.
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Bob from SWISCO responded:
October 1, 2023

Hello there. The shoe looks like our 15-228. If the coil springs are 1/2" wide, then use the Series 160 Coil Balances. Let me know if you have any further questions. 
Pivot Shoe, 17/32" Thick
Pivot Shoe, 17/32" Thick
15-228
$2.57
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