NEWALL Mainspring #1865N for AS caliber 277 - Alloy

Newall N-Dur-All Mainspring #1865N for AS caliber 277 movements plus perhaps similar ébauche watches, alloy, GR Ref. 4968, 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 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.