BESTFIT Mainspring 512M for Aurore 18, Kurth 251, Peseux 230 & 250 - Alloy

BESTFIT Mainspring 512M for Peseux caliber 230, 250, Aurore caliber 18 & Kurth caliber 251 plus perhaps similar ébauche watches, white alloy. See image for precise characteristics. I likely have several of these so the one you get may vary lightly from the images. 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 a pretty good job of representing the item.