Sash balance weight

A handy person from Thornton says:
Hello - my chanel balance is stamped 26 5 BX CMC 1 and I believe the model is S380-27. Can you tell me which stamp option to choose?

Thanks
Andy
A handy person from Thornton says:
Here are a few pics to go with my email just sent on the S380-27.

Andy
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Hi, Andy. I've got to admit, I'm feeling cautious. Series 380? Double-check that. Measure your bottom shoe as shown below. If you're correct about Series 380, it will measure 1". If it measures 1-3/32", then you actually have a Series 385.

As for the other details, you need a 27" balance, as you already determined, and your stamp is 2650. Caldwell's old "26 5" is SWISCO's new "2650."
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Alternate view of 15-004
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