Window Balance 25 in long 1/2 wide. Replacement needed

A quick learner from Marco Island Florida says:
February 16, 2021

I am trying to get the exact part number for a window balance

25 in long

1/2 Wide

Model 2430

Thanks Mike

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Bob from SWISCO responded:
February 17, 2021

Hey Mike. I'm confident we can help, but that stamp just tells us the spring strength of the balance. To know what kind you have, I need to see the nylon fitting on the opposite end of the metal channel. From there I should be able to identify the type or Series you need. Many thanks. 
A quick learner from Marco Island Florida says:
March 22, 2021
Sorry for the delay in my response.
Please see the attached pictures of the ends of the channel window balance

Again.

I am trying to get the exact part number for a window balance

25 in long

1/2 Wide

Model or spring strength 2430

Thanks
Mike
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Bob from SWISCO responded:
March 22, 2021

Hey Mike. We're getting there. It appears to be the top fitting on this balance is undamaged. Is there an undamaged version you can show me, perhaps from the other balance in the window or from an identical window in the house? From there I'll do my best to narrow this down. 
Channel Balance Shoe, 1" Depth
Channel Balance Shoe, 1" Depth
15-002
$0.74
Top Guide
Top Guide
19-045
$1.92
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