Vintage Swiss Onyx-Steel Mainspring for Howard 12s Model 553 – NOS
USD 15.00 USD
Specifications
| Compatible Brand | E. Howard Watch Co |
| Brand | E. Howard Watch Co |
| Type | Mainspring |
| Material | Steel |
Made in Switzerland. Fits: Howard 12s Model 553. Perfect for collectors or watchmakers restoring antique Howard watches.
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