BESTFIT Mainspring 513E for Buser 20, Phenix 89, 90, 250-253 - Alloy

BESTFIT Mainspring 513E for Buser caliber 20 and Phenix 89, 90, 250 - 253 plus perhaps similar ébauche watches, white alloy, new in envelope. I likely have several of these so the one you get may vary slightly from the images. See image for precise characteristics. 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.