Progress Mainspring for 16s Trenton Factory No. 344 – Steel
USD 6.00 USD
Specifications
| Brand | Progress |
| Country Of Origin | Switzerland |
| MPN | 344 |
| SKU | PMA-PROG0344S-10 |
| Type | Mainspring |
Images do an adequate job of representing the item. Waltham Watch Material Catalogue 1909 edition - reprint. South Bend Watch Material Catalog Oct 1928 - reprint. Fulton Watch Crystal Corp Fit-Tite Catalogue No. 2 - reprint.