Anderson double hung sash balancer help

A contractor from Cincinnati, OH says:
Hi folks,
Hope you can help find this part for a rather old Andersen window. Here are the specs:

Stamped 11600-2 and D97 7#27 8 79 on the window side
Stamped 11600-3 on the casing side above patent numbers

P.S. I tried submitting a photo but the site kept having an error
Profile picture of Paul
Paul from SWISCO responded:
Based on your stamp of "7#27," I would recommend our 24-737 Andersen sash balance.
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