2730 28" Part

A home owner from Irvine California says:
I do not see any other mark other than the engraved 2730. This looks somewhat like the parts online for the 28" 2730. I will upload more photos on request
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Emily from SWISCO responded:

Hi there! 

It looks like you have either our S351-28, with a 15-002 bottom attachment, or S390-28, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a spring strength option of 2730. 

If you have any further questions just let us know. 

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
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