BESTFIT Mainspring 410M for AS 1530, ETA 735, 2390 - Alloy

BESTFIT Mainspring 410M for AS caliber 1530 ETA caliber 735, 2390 movements plus perhaps similar ébauche watches, white alloy, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may 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 pretty good job of representing the item.