need help identifying channel balance and shoes

A home owner from Denver CO says:
Hi I need help selecting a replacement channel balance. The length of the channel without the shoes is 27". The stamp reads 26 5 ES Caldwell, which does not match any of the available selections on your online order form. I'm pretty confident I need the 15-004 shoe (winged 1 3/32") but not sure how to identify the top shoe. It is also winged and is 11/16".

Thank you!
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting. I believe the top attachment is our 19-005. I recommend our Series 385 for a possible replacement.
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