Anderson Sash Balance

A quick learner from VA says:
Two numbers on the back on the balance:

BR5 9317-88

and

11600-17
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Tom from SWISCO responded:
I think the key number here is 931. Can you confirm if those three digits appear to be printed with any prominence? Are they bigger, or perhaps a different style font? If so, I recommend our 24-939, which can replace Andersen balances stamped with 931.
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