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: It helps prevent the bobbin thread from tangling or unraveling when sewing operations start and stop by ensuring the bobbin stops spinning quickly. Compatible Singer Models

: Because of this specific left-pointing finger, it is not compatible with standard Class 15 machines or clones, where the finger typically points to the 1 o'clock position. 125291

: Collectors and restorers often look for original Simanco (Singer Manufacturing Company) stamped versions on sites like Old Singer Shop or Vintage Singer Parts . : It helps prevent the bobbin thread from

You can find these parts from various retailers and specialized vintage sewing suppliers: You can find these parts from various retailers

: This bobbin case features a "backward-latch" with a finger that points to the 11 o'clock position (left-pointing).

This part is specifically designed to fit several classic Singer models, including:

: Models 15-75, 15-88, 15-89, 15-90, 15-91, and 15-125.