Emily from SWISCO responded:
September 30, 2022
Hello! It looks like your balance is a match for our S351-25 or S390-25, depending on the depth of the bottom shoe. Our Series 351 has a 1" deep shoe and the Series 390 has a 1-1/8" deep shoe so you'll need to measure as shown below to see which one matches up. You will also need the 2440 spring strength option based on your 24 4 stamp. Comparison of the S351 and S390 balance shoes.
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