Watch-Craft Mainspring 3107W for AS caliber 1203, 1205, 1206, ETA caliber 640 –
USD 7.50 USD
Specifications
| Country Of Origin | Switzerland |
| Brand | C & E Marshall |
| MPN | 3107W |
| SKU | PMS-CEM3107WA-09 |
| Type | Mainspring |
Images do a pretty good job of representing the item. Illinois Watch Co Materials Catalog Dec 1923 - reprint. Fulton Watch Crystal Corp Fit-Tite Catalogue No. 2 - reprint. South Bend Watch Material Catalog Oct 1928 - reprint.