Anderson Balance 11600-3

A contractor from Virginia says:
May 12, 2012
I have an anderson balance marked 11600-3 above the patent numbers and E73 9#27 5 79 on the other side.

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Paul from SWISCO responded:
May 14, 2012
Thanks for posting! Please take a look at our 24-939 Andersen balance, which can be used to replace balance boxes with the stamp 9#27.
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