coil ballance

A quick learner from Columbia MO usa says:
April 18, 2023
cam pivot lock and coil spring assembly.
spring assembly numbers: Pat#'s 5.232.208 5.365.638 6.584.644. B2
cam pivot has no markings
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Jasmine from SWISCO responded:
April 19, 2023

Thanks for reaching out! Your pivot shoe appears to be the 15-228. Look over the dimensions and compare this shoe to your existing shoe. I am confident this is the replacement you'll need. The compatible cover is part 15-150S.

Dimensions for 15-228
Dimensions for 15-228

The compatible coil springs for this pivot shoe are the Series 160 Coil Balance Springs. It looks like you've written out a few different stamps. If you are looking for more than one balance, it looks like you are looking for coils stamped with 5s and 6s. The coil balance springs stamped with a 5 would be part S160-5 and the coils stamped with 6 would be part S160-6.
Pivot Shoe, 17/32" Thick
Pivot Shoe, 17/32" Thick
15-228
$2.57
1/2" Coil Single Support
1/2" Coil Single Support
15-150S
$1.10
5.5 lbs Series 160 Coil Balance
5.5 lbs Series 160 Coil Balance
S160-05
$4.63
6.5 lbs Series 160 Coil Balance
6.5 lbs Series 160 Coil Balance
S160-06
$4.85
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