3140 stamp measures 32 inches

A quick learner from Minnesota says:
Looking for 10
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Bob from SWISCO responded:

Thanks for writing in. This looks like either an S380-32 or S385-32. The only difference between these two balances is the depth of the bottom nylon shoe. See the diagram below for reference. Compare both with your old hardware to see what matches best. In either case, for a new stamp option go with 3140.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.

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