SIRINOX Mainspring for ETA caliber 2550 automatic - Alloy

SIRINOX Mainspring for ETA caliber 2550 automatic movements plus perhaps similar ébauche watches, alloy, new in sealed packaging. See images for further details. 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.