RN Mainspring No. 209 for Gruen 430, 431, 435, 440 caliber movements – Steel
USD 6.00 USD
Specifications
| Country/Region Of Manufacture | Switzerland |
| MPN | No.209 |
| SKU | PMS-RN0209S-03 |
| Type | Mainspring |
I likely have several of these so the one you get may differ slightly from the images. Images do an adequate job of representing the item. Waltham Watch Material Catalogue 1909 edition - reprint. South Bend Watch Material Catalog Oct 1928 - reprint.
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