HR Quick Fit Mainspring K490 for ETA 2412, Hamilton 796, Elgin 700, Roamer 366, 389 - Alloy

HR Quick Fit Mainspring K490 for ETA 2412, Benrus AE, Elgin 700, Hamilton 769 & Roamer 366, 389 caliber movements plus perhaps similar ébauche watches, white alloy, new in frail envelope. I likely have several of these so the one you get may differ slightly from the images. See images for precise mainspring specifications. I specialize in 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.