Bob from SWISCO responded:
March 10, 2024
Thanks for posting! This looks like either an S380-33 or S385-33 Channel Balance. The only difference between these two balances is the depth of the bottom nylon shoe, or the measurement from heel to toe. See the diagram below for reference. Compare both with your old hardware to see what matches best. In either case, for a stamp option choose 3240. Comparison of the S380 and S385 balance shoes.
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