Andersen Sash Balancer

A handy person from New York says:
December 28, 2018
Hello, I'm having a hard time figuring out which balancer I need to order as a replacement part. The numbers on the balancer aren't very legible but what I can make out is:
L52 10#31 7 84
Any help you could provide would be appreciated.
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Bob from SWISCO responded:
December 28, 2018

Thanks for contacting SWISCO. Based on that number, take a look at our 24-1033. This Andersen Balance is compatible with older Andersen Balances with the stamp number '10#31'. Take a look and see what you think.
Andersen Sash Balance, 1027, 1031, 1033
Andersen Sash Balance, 1027, 1031, 1033
24-1033
$54.20
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