⭐ Description
This is a rare original OEM Singer upper tension assembly, complete and fully functional, from a 1909 Singer Model 66 “Lotus”, serial number D1,303,553. Early Lotus‑era tension units are increasingly hard to find intact, especially with clean discs, a strong spring, and the original hardware present.
The unit has been fully cleaned and tested. The tension stud threads smoothly, and the check spring returns properly. This is a correct, period‑specific component for high‑quality restorations of early 66 machines.
Part Details:
Model: Singer 66 “Lotus”
Year: 1909
Serial: D1,303,553
Includes set screw
Type: Rare complete upper tension assembly
Condition: Cleaned, tested, fully functional
Components: Tension stud, discs, spring, nut, check spring
Authentic OEM Simanco machining — never a reproduction
A strong upgrade for restorers, collectors, or anyone replacing a worn or incomplete tension unit on an early 66. Photos show the exact item you will receive.

⭐ Why buyers choose LSP Vintage
Genuine OEM Singer Simanco parts only
Cleaned, tested, and ready to install
Accurate listings with clear photos
Deep knowledge of vintage Singer machines
Combined shipping and multi‑item discounts
Fast, careful shipping from Southampton, PA

⭐ Shipping
Ships quickly and securely via USPS. Multiple items automatically combine to save on shipping.