Anderson cottage window replacement balance P81 2#27 3-87

A home owner from Lebanon. NJ says:
he window description as follows: Anderson cottage window.
Markings: 11600-17
P81 12#27 3-87

I will need two sash balances.

I have attached four photos of the sash. After looking at this serial number on my larger screen computer instead of my camera phone, it looks like the number is 12#27, not the one I gave you which was 2#27.
User submitted photo of their window balance.
Profile picture of Paul
Paul from SWISCO responded:
Since your balance is stamped with "12#27," I would recommend our 24-1231 balance. However, this is not for a cottage window. Can you confirm that?
A quick learner says:
Hello Paul,
Thanks for update on replacement number. I'll order this from you online
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