Favorite Rational Mainspring 511M for Font 10, 16, 22 & Aurore 18 – Steel
USD 4.00 USD
Specifications
| Brand | Favorite |
| Country/Region Of Manufacture | Switzerland |
| MPN | 511M |
| SKU | PMS-FAVR511MS-01 |
| Type | Mainspring |
Images do a pretty good 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.