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Item Details:
- Part Number: 29515
- Type: Clock Movement Mainspring (Loop End)
- Dimensions: 3/4" Width x 0.016" Thickness x 108" Length (Metric: 19.0mm x 0.41mm x 2743mm)
- Compatibility: Designed for Seth Thomas #89 movements; also fits various Sessions and Ingraham clock movements
- Condition: New Old Stock (NOS)
Description:
Up for sale is a New Old Stock (NOS) vintage clock replacement mainspring, part number 29515. This high-tensile spring steel replacement features a loop-end termination design, measuring 3/4" wide by 0.016" thick with an extended length of 108 inches.
This part is essential for professional clock repair shops, enthusiasts, or antique clock restorations. The item is safely wound and factory-sealed inside its protective clear film to prevent rust, grease degradation, or bending. This additional side-profile photograph demonstrates the straightness of the steel and the heavy-duty metal retaining wire keeping the coil tightly compacted under factory tension. Please review the included photographs to verify the tag marking and complete cosmetic condition before placing your offer or offer.
![Vintage Seth Thomas 89 Clock Mainspring 29515 NOS 3/4\](img-large/g/9rcAAeSw0jpqjIQM/s-l1600/Vintage-Seth-Thomas-89-Clock-Mainspring-29515-NOS-.jpg "Vintage Seth Thomas 89 Clock Mainspring 29515 NOS 3/4\")
