NEWALL Mainspring #2027 for Cyma 750 - 761, Unitas 411 - 425 - Alloy

Newall N-Dur-All Mainspring #2027 for Cyma 750, 751, 752, 753, 761, 793, Election 965, Marvin 860, Unitas 411, 412, 417, 419, 421, 425 caliber movements plus perhaps similar ébauche watches, alloy, GR Ref. 4671, 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.