Balance Identification

A home owner from Colorado Springs says:
Which balance do I need? The code stamped on the broken channel balance is "26 9 JV CMC 7." I measured the length and it's 27 inches for just the channel and 9/16" width. It seems like this is the correct one but I'm unsure of the weight.

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Tom from SWISCO responded:
I'm afraid I cannot determine what option you need based on your stamp. I recommend weighing your sash on a scale to confirm the correct spring strength.
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