HR Ev-R-Last Mainspring E412 for Blancpain R48, AS 1138, ETA 1170 - Steel

HR Ev-R-Last Mainspring E412 for Blancpain R48, Benrus AZ, AS 1138 & ETA 1170, 1216, 2365 plus perhaps many more similar ébauche watches, steel. See image for precise characteristics. I likely have several of these so the one you get may differ slightly from the images. I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.