Swisscraft Mainspring #2720 for Gruen caliber 405, 406, 410, 411, 420, 421, 425,
USD 5.00 USD
Specifications
| Brand | Swisscraft |
| Country Of Origin | Switzerland |
| MPN | #2720 |
| SKU | PMS-SWIS2720S-08 |
| Type | Mainspring |
I likely have several of these so the one you get may differ slightly from the images. 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.
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