You can find these parts from various retailers and specialized vintage sewing suppliers:
: Suppliers such as GoldStar Tool offer quantity discounts for bulk purchases. 125291
: Collectors and restorers often look for original Simanco (Singer Manufacturing Company) stamped versions on sites like Old Singer Shop or Vintage Singer Parts . You can find these parts from various retailers
: 117 Plume, 15K88, 177, 177C, 191J, 191K, and 293B. Availability and Purchasing 125291
: This bobbin case features a "backward-latch" with a finger that points to the 11 o'clock position (left-pointing).