Replacement of window coil balance

A landlord from Allentown, PA says:
I submitted a sample of the balance that is needed. please let me know it you have it. I need 4 of them asap.

Please expidite

A customer submitted photo of a coil balance system.
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Paul from SWISCO responded:
Thanks for posting! Before I can offer an applicable replacement for your hardware, can you tell me if there are any stamps or markings printed on your coil springs?
A landlord from pa says:
I did not see any, I look every where. But i will double check
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Paul from SWISCO responded:
Thank you! In the meantime, please take a look at our 15-180 pivot shoe. This appears to match your own, compare the measurements. This also work with our Series 190 coil spring. What do you think about this?
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