BESTFIT Mainspring 213C for ETA 1010, Eterna 1031, Aurore 16T - Alloy

BESTFIT Mainspring 213C for Aurore (AV) caliber 16T, ETA caliber 1010, Eterna caliber 1031 plus perhaps similar ébauche watches, white alloy. See image for precise characteristics. I likely have several of these so the one you get bay 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 a satisfactory job of representing the item.