SSewing Machine Parts Atlas Evidence-first reference

OEM PART · bobbin winder

66670 Bobbin winder frame

Documented for Singer 15-91

Review complete

Documented model fitments

Singer 15-91
singer-class-15
Confirmed document row · independently blind-reviewed · PDF page 17 · printed page 29 · Bobbin Winder Parts rowList of Parts for Family Shops Machine No. 15-91 · external source, link-only

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